Vulnerability-Lookup

BDU:2025-11008 (CVE-2025-20135)

Vulnerability from fstec – Published: 2025-09-12 – Updated: 2025-09-12 – View on bdu.fstec.ru Fixed

Title

Уязвимость микропрограммного обеспечения межсетевых экранов Cisco Adaptive Security Appliance (ASA) и Cisco Firepower Threat Defense (FTD), связанная с ошибкой освобождения памяти при обработке входящих пакетов DHCP, позволяющая нарушителю вызывать отказ в обслуживании

Summary

Уязвимость микропрограммного обеспечения межсетевых экранов Cisco Adaptive Security Appliance (ASA) и Cisco Firepower Threat Defense (FTD) связана с ошибкой освобождения памяти при обработке входящих пакетов DHCP. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызывать отказ в обслуживании

Severity

3.3 (Low) CVSS 2.0


                      
                        AV:A/AC:L/Au:N/C:N/I:N/A:P

4.3 (Medium) CVSS 3.1


                      
                        CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Resource exhaustion

Incidents

Being clarified

Remediation

Software update

CWE

CWE-401 - Неправильное освобождение памяти перед удалением последней ссылки («утечка памяти»)

Aliases

CVE-2025-20135, VULDB, ID:320193

References

2 references

URL
https://www.cve.org/CVERecord?id=CVE-2025-20135
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/c…

Impacted products

2 products from 2 vendors

Vendors

Cisco Systems, Inc.

Products

Firepower Threat Defense, Adaptive Security Appliance

Versions

6.2.3 (Firepower Threat Defense), 6.4.0 (Firepower Threat Defense), 6.2.3.16 (Firepower Threat Defense), 9.8.4.22 (Adaptive Security Appliance), 9.8.4.25 (Adaptive Security Appliance), 9.12.4.2 (Adaptive Security Appliance), 9.14.1.15 (Adaptive Security Appliance), 9.16.1 (Adaptive Security Appliance), 7.0.0 (Firepower Threat Defense), 7.2.0 (Firepower Threat Defense), 7.2.0.1 (Firepower Threat Defense), 9.14.1 (Adaptive Security Appliance), 9.14.1.10 (Adaptive Security Appliance), 9.14.1.19 (Adaptive Security Appliance), 9.14.1.30 (Adaptive Security Appliance), 9.14.2 (Adaptive Security Appliance), 9.14.2.4 (Adaptive Security Appliance), 9.14.2.8 (Adaptive Security Appliance), 9.14.2.13 (Adaptive Security Appliance), 9.14.2.15 (Adaptive Security Appliance), 9.14.3 (Adaptive Security Appliance), 9.14.3.1 (Adaptive Security Appliance), 9.14.3.9 (Adaptive Security Appliance), 9.14.3.13 (Adaptive Security Appliance), 9.14.3.15 (Adaptive Security Appliance), 9.14.3.18 (Adaptive Security Appliance), 6.6.0 (Firepower Threat Defense), 6.6.0.1 (Firepower Threat Defense), 6.6.1 (Firepower Threat Defense), 6.6.3 (Firepower Threat Defense), 6.6.4 (Firepower Threat Defense), 6.6.5 (Firepower Threat Defense), 6.6.5.1 (Firepower Threat Defense), 6.6.5.2 (Firepower Threat Defense), 7.0.0.1 (Firepower Threat Defense), 7.0.1 (Firepower Threat Defense), 7.0.1.1 (Firepower Threat Defense), 7.0.2 (Firepower Threat Defense), 7.0.2.1 (Firepower Threat Defense), 7.0.3 (Firepower Threat Defense), 7.0.4 (Firepower Threat Defense), 7.1.0.1 (Firepower Threat Defense), 7.1.0.2 (Firepower Threat Defense), 9.8.1 (Adaptive Security Appliance), 9.8.1.5 (Adaptive Security Appliance), 9.8.1.7 (Adaptive Security Appliance), 9.8.2 (Adaptive Security Appliance), 9.8.2.8 (Adaptive Security Appliance), 9.8.2.14 (Adaptive Security Appliance), 9.8.2.15 (Adaptive Security Appliance), 9.8.2.17 (Adaptive Security Appliance), 9.8.2.20 (Adaptive Security Appliance), 9.8.2.24 (Adaptive Security Appliance), 9.8.2.26 (Adaptive Security Appliance), 9.8.2.28 (Adaptive Security Appliance), 9.8.2.33 (Adaptive Security Appliance), 9.8.2.35 (Adaptive Security Appliance), 9.8.2.38 (Adaptive Security Appliance), 9.8.3 (Adaptive Security Appliance), 9.8.3.8 (Adaptive Security Appliance), 9.8.3.11 (Adaptive Security Appliance), 9.8.3.14 (Adaptive Security Appliance), 9.8.3.16 (Adaptive Security Appliance), 9.8.3.18 (Adaptive Security Appliance), 9.8.3.21 (Adaptive Security Appliance), 9.8.3.26 (Adaptive Security Appliance), 9.8.3.29 (Adaptive Security Appliance), 9.8.4 (Adaptive Security Appliance), 9.8.4.3 (Adaptive Security Appliance), 9.8.4.7 (Adaptive Security Appliance), 9.8.4.8 (Adaptive Security Appliance), 9.8.4.10 (Adaptive Security Appliance), 9.8.4.12 (Adaptive Security Appliance), 9.8.4.15 (Adaptive Security Appliance), 9.8.4.17 (Adaptive Security Appliance), 9.14.3.11 (Adaptive Security Appliance), 9.14.4.6 (Adaptive Security Appliance), 9.14.4 (Adaptive Security Appliance), 9.14.4.7 (Adaptive Security Appliance), 9.14.4.12 (Adaptive Security Appliance), 9.16.3 (Adaptive Security Appliance), 9.16.3.3 (Adaptive Security Appliance), 9.16.3.14 (Adaptive Security Appliance), 9.17.1 (Adaptive Security Appliance), 9.17.1.7 (Adaptive Security Appliance), 9.17.1.9 (Adaptive Security Appliance), 9.17.1.10 (Adaptive Security Appliance), 9.17.1.11 (Adaptive Security Appliance), 9.17.1.13 (Adaptive Security Appliance), 9.17.1.15 (Adaptive Security Appliance), 9.18.1 (Adaptive Security Appliance), 6.6.7 (Firepower Threat Defense), 9.16.1.28 (Adaptive Security Appliance), 9.16.2 (Adaptive Security Appliance), 9.16.2.3 (Adaptive Security Appliance), 9.16.2.7 (Adaptive Security Appliance), 9.16.2.11 (Adaptive Security Appliance), 9.16.2.13 (Adaptive Security Appliance), 9.16.2.14 (Adaptive Security Appliance), 9.16.3.15 (Adaptive Security Appliance), 9.16.3.19 (Adaptive Security Appliance), 9.16.3.23 (Adaptive Security Appliance), 9.16.4 (Adaptive Security Appliance), 9.16.4.9 (Adaptive Security Appliance), 9.17.1.20 (Adaptive Security Appliance), 9.18.1.3 (Adaptive Security Appliance), 9.18.2 (Adaptive Security Appliance), 9.18.2.5 (Adaptive Security Appliance), 9.18.2.7 (Adaptive Security Appliance), 9.19.1 (Adaptive Security Appliance), 7.0.5 (Firepower Threat Defense), 7.1.0.3 (Firepower Threat Defense), 7.2.1 (Firepower Threat Defense), 7.2.2 (Firepower Threat Defense), 7.2.3 (Firepower Threat Defense), 7.3.0 (Firepower Threat Defense), 7.3.1 (Firepower Threat Defense), 7.3.1.1 (Firepower Threat Defense), 7.2.4 (Firepower Threat Defense), 9.8.4.20 (Adaptive Security Appliance), 9.8.4.26 (Adaptive Security Appliance), 9.8.4.29 (Adaptive Security Appliance), 9.12.1 (Adaptive Security Appliance), 9.12.1.2 (Adaptive Security Appliance), 9.12.1.3 (Adaptive Security Appliance), 9.12.2 (Adaptive Security Appliance), 9.12.2.1 (Adaptive Security Appliance), 9.12.2.4 (Adaptive Security Appliance), 9.12.2.5 (Adaptive Security Appliance), 9.12.2.9 (Adaptive Security Appliance), 9.12.3 (Adaptive Security Appliance), 9.12.3.2 (Adaptive Security Appliance), 9.12.3.7 (Adaptive Security Appliance), 9.12.3.9 (Adaptive Security Appliance), 9.12.4 (Adaptive Security Appliance), 9.12.4.4 (Adaptive Security Appliance), 9.12.4.7 (Adaptive Security Appliance), 9.12.4.8 (Adaptive Security Appliance), 9.12.4.10 (Adaptive Security Appliance), 9.12.4.13 (Adaptive Security Appliance), 9.12.4.18 (Adaptive Security Appliance), 9.12.4.24 (Adaptive Security Appliance), 9.12.4.26 (Adaptive Security Appliance), 9.12.4.29 (Adaptive Security Appliance), 9.12.4.30 (Adaptive Security Appliance), 9.12.4.35 (Adaptive Security Appliance), 9.14.1.6 (Adaptive Security Appliance), 9.8.4.32 (Adaptive Security Appliance), 9.8.4.33 (Adaptive Security Appliance), 9.8.4.34 (Adaptive Security Appliance), 9.8.4.35 (Adaptive Security Appliance), 9.8.4.39 (Adaptive Security Appliance), 9.8.4.40 (Adaptive Security Appliance), 9.8.4.41 (Adaptive Security Appliance), 9.8.4.43 (Adaptive Security Appliance), 9.8.4.44 (Adaptive Security Appliance), 9.8.4.45 (Adaptive Security Appliance), 9.8.4.46 (Adaptive Security Appliance), 9.8.4.48 (Adaptive Security Appliance), 9.12.3.12 (Adaptive Security Appliance), 9.12.4.37 (Adaptive Security Appliance), 9.12.4.38 (Adaptive Security Appliance), 9.12.4.39 (Adaptive Security Appliance), 9.12.4.40 (Adaptive Security Appliance), 9.12.4.41 (Adaptive Security Appliance), 9.12.4.47 (Adaptive Security Appliance), 9.12.4.48 (Adaptive Security Appliance), 9.12.4.50 (Adaptive Security Appliance), 9.12.4.52 (Adaptive Security Appliance), 9.12.4.54 (Adaptive Security Appliance), 9.12.4.55 (Adaptive Security Appliance), 9.12.4.56 (Adaptive Security Appliance), 9.14.4.13 (Adaptive Security Appliance), 9.14.4.14 (Adaptive Security Appliance), 9.14.4.15 (Adaptive Security Appliance), 9.14.4.17 (Adaptive Security Appliance), 9.14.4.22 (Adaptive Security Appliance), 9.14.4.23 (Adaptive Security Appliance), 9.16.4.14 (Adaptive Security Appliance), 9.16.4.18 (Adaptive Security Appliance), 9.17.1.30 (Adaptive Security Appliance), 9.18.2.8 (Adaptive Security Appliance), 9.18.3 (Adaptive Security Appliance), 9.19.1.5 (Adaptive Security Appliance), 9.19.1.9 (Adaptive Security Appliance), 6.2.3.3 (Firepower Threat Defense), 6.2.3.4 (Firepower Threat Defense), 6.2.3.5 (Firepower Threat Defense), 6.2.3.6 (Firepower Threat Defense), 6.2.3.7 (Firepower Threat Defense), 6.2.3.8 (Firepower Threat Defense), 6.2.3.9 (Firepower Threat Defense), 6.2.3.10 (Firepower Threat Defense), 6.2.3.11 (Firepower Threat Defense), 6.2.3.12 (Firepower Threat Defense), 6.2.3.13 (Firepower Threat Defense), 6.2.3.14 (Firepower Threat Defense), 6.2.3.15 (Firepower Threat Defense), 6.2.3.17 (Firepower Threat Defense), 6.2.3.18 (Firepower Threat Defense), 6.4.0.1 (Firepower Threat Defense), 6.4.0.2 (Firepower Threat Defense), 6.4.0.3 (Firepower Threat Defense), 6.4.0.4 (Firepower Threat Defense), 6.4.0.5 (Firepower Threat Defense), 6.4.0.6 (Firepower Threat Defense), 6.4.0.7 (Firepower Threat Defense), 6.4.0.8 (Firepower Threat Defense), 6.4.0.9 (Firepower Threat Defense), 6.4.0.10 (Firepower Threat Defense), 6.4.0.11 (Firepower Threat Defense), 6.4.0.12 (Firepower Threat Defense), 6.4.0.13 (Firepower Threat Defense), 6.4.0.14 (Firepower Threat Defense), 6.4.0.15 (Firepower Threat Defense), 6.4.0.16 (Firepower Threat Defense), 6.6.7.1 (Firepower Threat Defense), 7.1.0 (Firepower Threat Defense), 6.2.3.1 (Firepower Threat Defense), 6.2.3.2 (Firepower Threat Defense), 9.12.4.58 (Adaptive Security Appliance), 9.16.4.19 (Adaptive Security Appliance), 9.16.4.27 (Adaptive Security Appliance), 9.18.3.39 (Adaptive Security Appliance), 9.18.3.46 (Adaptive Security Appliance), 9.19.1.12 (Adaptive Security Appliance), 7.0.6 (Firepower Threat Defense), 9.16.4.38 (Adaptive Security Appliance), 9.18.3.53 (Adaptive Security Appliance), 9.18.3.55 (Adaptive Security Appliance), 9.19.1.18 (Adaptive Security Appliance), 7.2.4.1 (Firepower Threat Defense), 7.2.5 (Firepower Threat Defense), 9.12.4.62 (Adaptive Security Appliance), 9.12.4.65 (Adaptive Security Appliance), 9.16.4.39 (Adaptive Security Appliance), 9.16.4.42 (Adaptive Security Appliance), 9.16.4.48 (Adaptive Security Appliance), 9.16.4.55 (Adaptive Security Appliance), 9.17.1.33 (Adaptive Security Appliance), 9.18.3.56 (Adaptive Security Appliance), 9.18.4 (Adaptive Security Appliance), 9.18.4.5 (Adaptive Security Appliance), 9.18.4.8 (Adaptive Security Appliance), 9.19.1.22 (Adaptive Security Appliance), 9.19.1.24 (Adaptive Security Appliance), 9.19.1.27 (Adaptive Security Appliance), 9.20.1 (Adaptive Security Appliance), 9.20.1.5 (Adaptive Security Appliance), 9.20.2 (Adaptive Security Appliance), 6.4.0.17 (Firepower Threat Defense), 7.0.6.1 (Firepower Threat Defense), 7.2.5.1 (Firepower Threat Defense), 7.4.0 (Firepower Threat Defense), 7.4.1 (Firepower Threat Defense), 7.3.1.2 (Firepower Threat Defense), 6.6.7.2 (Firepower Threat Defense), 9.8.2.45 (Adaptive Security Appliance), 9.14.4.24 (Adaptive Security Appliance), 9.16.4.57 (Adaptive Security Appliance), 9.16.4.61 (Adaptive Security Appliance), 9.17.1.39 (Adaptive Security Appliance), 9.18.4.22 (Adaptive Security Appliance), 9.18.4.24 (Adaptive Security Appliance), 9.18.4.29 (Adaptive Security Appliance), 9.19.1.28 (Adaptive Security Appliance), 9.19.1.31 (Adaptive Security Appliance), 9.20.2.10 (Adaptive Security Appliance), 9.20.2.21 (Adaptive Security Appliance), 9.20.2.22 (Adaptive Security Appliance), 7.0.6.2 (Firepower Threat Defense), 7.2.5.2 (Firepower Threat Defense), 7.2.8.1 (Firepower Threat Defense), 7.4.1.1 (Firepower Threat Defense), 9.12.4.67 (Adaptive Security Appliance), 6.4.0.18 (Firepower Threat Defense), 7.2.6 (Firepower Threat Defense), 7.2.7 (Firepower Threat Defense), 9.16.4.67 (Adaptive Security Appliance), 9.16.4.70 (Adaptive Security Appliance), 9.18.4.40 (Adaptive Security Appliance), 9.20.3 (Adaptive Security Appliance), 9.16.4.62 (Adaptive Security Appliance), 9.18.4.34 (Adaptive Security Appliance), 7.2.8 (Firepower Threat Defense), 7.4.2 (Firepower Threat Defense), 9.20.3.4 (Adaptive Security Appliance), 9.22.1.1 (Adaptive Security Appliance), 7.4.2.1 (Firepower Threat Defense), 7.6.0 (Firepower Threat Defense), 9.16.4.71 (Adaptive Security Appliance), 9.17.1.45 (Adaptive Security Appliance), 9.17.1.46 (Adaptive Security Appliance), 9.18.4.47 (Adaptive Security Appliance), 9.19.1.37 (Adaptive Security Appliance), 9.19.1.38 (Adaptive Security Appliance), 9.22.1.2 (Adaptive Security Appliance), 7.0.6.3 (Firepower Threat Defense), 7.2.9 (Firepower Threat Defense)

Product types

Appliance software, Network appliance software

Mitigations

Использовать рекомендации: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dhcp-qj7nGs4N

JSON

To clipboard

{
  "CVSS 2.0": "AV:A/AC:L/Au:N/C:N/I:N/A:P",
  "CVSS 3.0": "AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Cisco Systems, Inc.",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "6.2.3 (Firepower Threat Defense), 6.4.0 (Firepower Threat Defense), 6.2.3.16 (Firepower Threat Defense), 9.8.4.22 (Adaptive Security Appliance), 9.8.4.25 (Adaptive Security Appliance), 9.12.4.2 (Adaptive Security Appliance), 9.14.1.15 (Adaptive Security Appliance), 9.16.1 (Adaptive Security Appliance), 7.0.0 (Firepower Threat Defense), 7.2.0 (Firepower Threat Defense), 7.2.0.1 (Firepower Threat Defense), 9.14.1 (Adaptive Security Appliance), 9.14.1.10 (Adaptive Security Appliance), 9.14.1.19 (Adaptive Security Appliance), 9.14.1.30 (Adaptive Security Appliance), 9.14.2 (Adaptive Security Appliance), 9.14.2.4 (Adaptive Security Appliance), 9.14.2.8 (Adaptive Security Appliance), 9.14.2.13 (Adaptive Security Appliance), 9.14.2.15 (Adaptive Security Appliance), 9.14.3 (Adaptive Security Appliance), 9.14.3.1 (Adaptive Security Appliance), 9.14.3.9 (Adaptive Security Appliance), 9.14.3.13 (Adaptive Security Appliance), 9.14.3.15 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(Adaptive Security Appliance), 9.16.4.14 (Adaptive Security Appliance), 9.16.4.18 (Adaptive Security Appliance), 9.17.1.30 (Adaptive Security Appliance), 9.18.2.8 (Adaptive Security Appliance), 9.18.3 (Adaptive Security Appliance), 9.19.1.5 (Adaptive Security Appliance), 9.19.1.9 (Adaptive Security Appliance), 6.2.3.3 (Firepower Threat Defense), 6.2.3.4 (Firepower Threat Defense), 6.2.3.5 (Firepower Threat Defense), 6.2.3.6 (Firepower Threat Defense), 6.2.3.7 (Firepower Threat Defense), 6.2.3.8 (Firepower Threat Defense), 6.2.3.9 (Firepower Threat Defense), 6.2.3.10 (Firepower Threat Defense), 6.2.3.11 (Firepower Threat Defense), 6.2.3.12 (Firepower Threat Defense), 6.2.3.13 (Firepower Threat Defense), 6.2.3.14 (Firepower Threat Defense), 6.2.3.15 (Firepower Threat Defense), 6.2.3.17 (Firepower Threat Defense), 6.2.3.18 (Firepower Threat Defense), 6.4.0.1 (Firepower Threat Defense), 6.4.0.2 (Firepower Threat Defense), 6.4.0.3 (Firepower Threat Defense), 6.4.0.4 (Firepower Threat Defense), 6.4.0.5 (Firepower Threat Defense), 6.4.0.6 (Firepower Threat Defense), 6.4.0.7 (Firepower Threat Defense), 6.4.0.8 (Firepower Threat Defense), 6.4.0.9 (Firepower Threat Defense), 6.4.0.10 (Firepower Threat Defense), 6.4.0.11 (Firepower Threat Defense), 6.4.0.12 (Firepower Threat Defense), 6.4.0.13 (Firepower Threat Defense), 6.4.0.14 (Firepower Threat Defense), 6.4.0.15 (Firepower Threat Defense), 6.4.0.16 (Firepower Threat Defense), 6.6.7.1 (Firepower Threat Defense), 7.1.0 (Firepower Threat Defense), 6.2.3.1 (Firepower Threat Defense), 6.2.3.2 (Firepower Threat Defense), 9.12.4.58 (Adaptive Security Appliance), 9.16.4.19 (Adaptive Security Appliance), 9.16.4.27 (Adaptive Security Appliance), 9.18.3.39 (Adaptive Security Appliance), 9.18.3.46 (Adaptive Security Appliance), 9.19.1.12 (Adaptive Security Appliance), 7.0.6 (Firepower Threat Defense), 9.16.4.38 (Adaptive Security Appliance), 9.18.3.53 (Adaptive Security Appliance), 9.18.3.55 (Adaptive Security Appliance), 9.19.1.18 (Adaptive Security Appliance), 7.2.4.1 (Firepower Threat Defense), 7.2.5 (Firepower Threat Defense), 9.12.4.62 (Adaptive Security Appliance), 9.12.4.65 (Adaptive Security Appliance), 9.16.4.39 (Adaptive Security Appliance), 9.16.4.42 (Adaptive Security Appliance), 9.16.4.48 (Adaptive Security Appliance), 9.16.4.55 (Adaptive Security Appliance), 9.17.1.33 (Adaptive Security Appliance), 9.18.3.56 (Adaptive Security Appliance), 9.18.4 (Adaptive Security Appliance), 9.18.4.5 (Adaptive Security Appliance), 9.18.4.8 (Adaptive Security Appliance), 9.19.1.22 (Adaptive Security Appliance), 9.19.1.24 (Adaptive Security Appliance), 9.19.1.27 (Adaptive Security Appliance), 9.20.1 (Adaptive Security Appliance), 9.20.1.5 (Adaptive Security Appliance), 9.20.2 (Adaptive Security Appliance), 6.4.0.17 (Firepower Threat Defense), 7.0.6.1 (Firepower Threat Defense), 7.2.5.1 (Firepower Threat Defense), 7.4.0 (Firepower Threat Defense), 7.4.1 (Firepower Threat Defense), 7.3.1.2 (Firepower Threat Defense), 6.6.7.2 (Firepower Threat Defense), 9.8.2.45 (Adaptive Security Appliance), 9.14.4.24 (Adaptive Security Appliance), 9.16.4.57 (Adaptive Security Appliance), 9.16.4.61 (Adaptive Security Appliance), 9.17.1.39 (Adaptive Security Appliance), 9.18.4.22 (Adaptive Security Appliance), 9.18.4.24 (Adaptive Security Appliance), 9.18.4.29 (Adaptive Security Appliance), 9.19.1.28 (Adaptive Security Appliance), 9.19.1.31 (Adaptive Security Appliance), 9.20.2.10 (Adaptive Security Appliance), 9.20.2.21 (Adaptive Security Appliance), 9.20.2.22 (Adaptive Security Appliance), 7.0.6.2 (Firepower Threat Defense), 7.2.5.2 (Firepower Threat Defense), 7.2.8.1 (Firepower Threat Defense), 7.4.1.1 (Firepower Threat Defense), 9.12.4.67 (Adaptive Security Appliance), 6.4.0.18 (Firepower Threat Defense), 7.2.6 (Firepower Threat Defense), 7.2.7 (Firepower Threat Defense), 9.16.4.67 (Adaptive Security Appliance), 9.16.4.70 (Adaptive Security Appliance), 9.18.4.40 (Adaptive Security Appliance), 9.20.3 (Adaptive Security Appliance), 9.16.4.62 (Adaptive Security Appliance), 9.18.4.34 (Adaptive Security Appliance), 7.2.8 (Firepower Threat Defense), 7.4.2 (Firepower Threat Defense), 9.20.3.4 (Adaptive Security Appliance), 9.22.1.1 (Adaptive Security Appliance), 7.4.2.1 (Firepower Threat Defense), 7.6.0 (Firepower Threat Defense), 9.16.4.71 (Adaptive Security Appliance), 9.17.1.45 (Adaptive Security Appliance), 9.17.1.46 (Adaptive Security Appliance), 9.18.4.47 (Adaptive Security Appliance), 9.19.1.37 (Adaptive Security Appliance), 9.19.1.38 (Adaptive Security Appliance), 9.22.1.2 (Adaptive Security Appliance), 7.0.6.3 (Firepower Threat Defense), 7.2.9 (Firepower Threat Defense)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438:\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dhcp-qj7nGs4N",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "10.10.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "12.09.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "12.09.2025",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2025-11008",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2025-20135, VulDB ID:320193",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Firepower Threat Defense, Adaptive Security Appliance",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": null,
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u043c\u0435\u0436\u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u044d\u043a\u0440\u0430\u043d\u043e\u0432 Cisco Adaptive Security Appliance (ASA) \u0438 Cisco Firepower Threat Defense (FTD), \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u043e\u0448\u0438\u0431\u043a\u043e\u0439 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0432\u0445\u043e\u0434\u044f\u0449\u0438\u0445 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 DHCP, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u044b\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u0435 \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0435\u0440\u0435\u0434 \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u0435\u043c \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0439 \u0441\u0441\u044b\u043b\u043a\u0438 (\u00ab\u0443\u0442\u0435\u0447\u043a\u0430 \u043f\u0430\u043c\u044f\u0442\u0438\u00bb) (CWE-401)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u043c\u0435\u0436\u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u044d\u043a\u0440\u0430\u043d\u043e\u0432 Cisco Adaptive Security Appliance (ASA) \u0438 Cisco Firepower Threat Defense (FTD) \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043e\u0448\u0438\u0431\u043a\u043e\u0439 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0432\u0445\u043e\u0434\u044f\u0449\u0438\u0445 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 DHCP. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u0432\u044b\u0437\u044b\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u0418\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://www.cve.org/CVERecord?id=CVE-2025-20135\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dhcp-qj7nGs4N",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041f\u041e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430, \u041f\u041e \u0441\u0435\u0442\u0435\u0432\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-401",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041d\u0438\u0437\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 3,3)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 4,3)"
}

CVE-2025-20135 (GCVE-0-2025-20135)

Vulnerability from cvelistv5 – Published: 2025-08-14 16:28 – Updated: 2025-08-14 19:21

Title

Cisco Adaptive Security Appliance and Firepower Threat Defense Software DHCP Denial of Service Vulnerability

Summary

A vulnerability in the DHCP client functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to exhaust available memory. This vulnerability is due to improper validation of incoming DHCP packets. An attacker could exploit this vulnerability by repeatedly sending crafted DHCPv4 packets to an affected device. A successful exploit could allow the attacker to exhaust available memory, which would affect availability of services and prevent new processes from starting, resulting in a Denial of Service (DoS) condition that would require a manual reboot. Note: On Cisco Secure FTD Software, this vulnerability does not affect management interfaces.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-08-14 18:41 UTC

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

cisco mitre root

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

2 products

Vendor	Product	Version
Cisco	Cisco Adaptive Security Appliance (ASA) Software	Affected: 9.12.3 Affected: 9.8.3 Affected: 9.12.1 Affected: 9.8.1 Affected: 9.12.2 Affected: 9.8.2.45 Affected: 9.8.2 Affected: 9.8.4 Affected: 9.14.1 Affected: 9.12.4 Affected: 9.8.2.26 Affected: 9.8.2.24 Affected: 9.8.2.15 Affected: 9.8.2.14 Affected: 9.8.2.35 Affected: 9.8.2.20 Affected: 9.8.2.8 Affected: 9.8.2.17 Affected: 9.8.2.28 Affected: 9.8.2.33 Affected: 9.8.2.38 Affected: 9.8.4.25 Affected: 9.12.3.2 Affected: 9.12.3.7 Affected: 9.8.3.18 Affected: 9.8.3.14 Affected: 9.8.4.15 Affected: 9.8.4.8 Affected: 9.8.1.7 Affected: 9.8.3.29 Affected: 9.14.1.10 Affected: 9.12.2.5 Affected: 9.8.4.22 Affected: 9.12.3.12 Affected: 9.8.4.7 Affected: 9.8.4.17 Affected: 9.8.3.16 Affected: 9.8.4.20 Affected: 9.8.3.11 Affected: 9.12.1.3 Affected: 9.8.4.3 Affected: 9.12.2.4 Affected: 9.8.4.12 Affected: 9.12.1.2 Affected: 9.8.3.26 Affected: 9.8.1.5 Affected: 9.12.2.9 Affected: 9.12.3.9 Affected: 9.8.3.21 Affected: 9.8.4.10 Affected: 9.12.2.1 Affected: 9.12.4.2 Affected: 9.14.1.6 Affected: 9.8.3.8 Affected: 9.14.1.15 Affected: 9.14.1.19 Affected: 9.8.4.26 Affected: 9.12.4.4 Affected: 9.14.1.30 Affected: 9.8.4.29 Affected: 9.12.4.7 Affected: 9.14.2 Affected: 9.12.4.8 Affected: 9.8.4.32 Affected: 9.12.4.10 Affected: 9.14.2.4 Affected: 9.14.2.8 Affected: 9.12.4.13 Affected: 9.8.4.33 Affected: 9.14.2.13 Affected: 9.8.4.34 Affected: 9.12.4.18 Affected: 9.8.4.35 Affected: 9.14.2.15 Affected: 9.12.4.24 Affected: 9.16.1 Affected: 9.8.4.39 Affected: 9.14.3 Affected: 9.12.4.26 Affected: 9.16.1.28 Affected: 9.14.3.1 Affected: 9.12.4.29 Affected: 9.14.3.9 Affected: 9.16.2 Affected: 9.12.4.30 Affected: 9.16.2.3 Affected: 9.8.4.40 Affected: 9.14.3.11 Affected: 9.12.4.35 Affected: 9.8.4.41 Affected: 9.15.1.1 Affected: 9.14.3.13 Affected: 9.16.2.7 Affected: 9.12.4.37 Affected: 9.14.3.15 Affected: 9.17.1 Affected: 9.16.2.11 Affected: 9.14.3.18 Affected: 9.16.2.13 Affected: 9.12.4.39 Affected: 9.12.4.38 Affected: 9.8.4.43 Affected: 9.14.4 Affected: 9.16.2.14 Affected: 9.17.1.7 Affected: 9.12.4.40 Affected: 9.16.3.3 Affected: 9.14.4.6 Affected: 9.16.3 Affected: 9.16.3.14 Affected: 9.17.1.9 Affected: 9.14.4.7 Affected: 9.12.4.41 Affected: 9.17.1.10 Affected: 9.8.4.44 Affected: 9.18.1 Affected: 9.12.4.47 Affected: 9.14.4.12 Affected: 9.16.3.15 Affected: 9.18.1.3 Affected: 9.17.1.11 Affected: 9.12.4.48 Affected: 9.14.4.13 Affected: 9.18.2 Affected: 9.16.3.19 Affected: 9.17.1.13 Affected: 9.12.4.50 Affected: 9.14.4.14 Affected: 9.17.1.15 Affected: 9.8.4.45 Affected: 9.12.4.52 Affected: 9.14.4.15 Affected: 9.16.3.23 Affected: 9.18.2.5 Affected: 9.16.4 Affected: 9.12.4.54 Affected: 9.14.4.17 Affected: 9.8.4.46 Affected: 9.17.1.20 Affected: 9.18.2.7 Affected: 9.19.1 Affected: 9.16.4.9 Affected: 9.12.4.55 Affected: 9.18.2.8 Affected: 9.14.4.22 Affected: 9.16.4.14 Affected: 9.8.4.48 Affected: 9.18.3 Affected: 9.19.1.5 Affected: 9.14.4.23 Affected: 9.12.4.56 Affected: 9.16.4.18 Affected: 9.17.1.30 Affected: 9.19.1.9 Affected: 9.18.3.39 Affected: 9.16.4.19 Affected: 9.12.4.58 Affected: 9.19.1.12 Affected: 9.18.3.46 Affected: 9.16.4.27 Affected: 9.19.1.18 Affected: 9.18.3.53 Affected: 9.18.3.55 Affected: 9.16.4.38 Affected: 9.17.1.33 Affected: 9.12.4.62 Affected: 9.16.4.39 Affected: 9.18.3.56 Affected: 9.20.1 Affected: 9.16.4.42 Affected: 9.19.1.22 Affected: 9.18.4 Affected: 9.20.1.5 Affected: 9.18.4.5 Affected: 9.19.1.24 Affected: 9.16.4.48 Affected: 9.18.4.8 Affected: 9.20.2 Affected: 9.19.1.27 Affected: 9.12.4.65 Affected: 9.16.4.55 Affected: 9.18.4.22 Affected: 9.20.2.10 Affected: 9.16.4.57 Affected: 9.19.1.28 Affected: 9.17.1.39 Affected: 9.12.4.67 Affected: 9.14.4.24 Affected: 9.18.4.24 Affected: 9.20.2.21 Affected: 9.16.4.61 Affected: 9.19.1.31 Affected: 9.18.4.29 Affected: 9.20.2.22 Affected: 9.16.4.62 Affected: 9.18.4.34 Affected: 9.20.3 Affected: 9.16.4.67 Affected: 9.16.4.70 Affected: 9.18.4.40 Affected: 9.22.1.1 Affected: 9.16.4.71 Affected: 9.20.3.4 Affected: 9.18.4.47 Affected: 9.17.1.45 Affected: 9.19.1.37 Affected: 9.17.1.46 Affected: 9.19.1.38 Affected: 9.22.1.2
Cisco	Cisco Firepower Threat Defense Software	Affected: 6.2.3.14 Affected: 6.4.0.1 Affected: 6.2.3.7 Affected: 6.2.3 Affected: 6.4.0.2 Affected: 6.2.3.9 Affected: 6.2.3.1 Affected: 6.2.3.2 Affected: 6.4.0.5 Affected: 6.2.3.10 Affected: 6.4.0 Affected: 6.4.0.3 Affected: 6.2.3.6 Affected: 6.4.0.4 Affected: 6.2.3.15 Affected: 6.2.3.5 Affected: 6.2.3.4 Affected: 6.2.3.3 Affected: 6.2.3.8 Affected: 6.4.0.6 Affected: 6.2.3.11 Affected: 6.2.3.12 Affected: 6.2.3.13 Affected: 6.4.0.7 Affected: 6.4.0.8 Affected: 6.6.0 Affected: 6.4.0.9 Affected: 6.2.3.16 Affected: 6.6.0.1 Affected: 6.6.1 Affected: 6.4.0.10 Affected: 6.4.0.11 Affected: 6.6.3 Affected: 6.6.4 Affected: 6.4.0.12 Affected: 7.0.0 Affected: 6.2.3.17 Affected: 7.0.0.1 Affected: 6.6.5 Affected: 7.0.1 Affected: 7.1.0 Affected: 6.4.0.13 Affected: 6.6.5.1 Affected: 6.2.3.18 Affected: 7.0.1.1 Affected: 6.4.0.14 Affected: 7.1.0.1 Affected: 6.6.5.2 Affected: 7.0.2 Affected: 6.4.0.15 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 6.6.7 Affected: 7.1.0.2 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 6.4.0.16 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 6.6.7.1 Affected: 7.3.1 Affected: 7.1.0.3 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 6.4.0.17 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 6.6.7.2 Affected: 6.4.0.18 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-20135",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-08-14T18:41:32.287677Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-08-14T19:21:28.891Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco Adaptive Security Appliance (ASA) Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "9.12.3"
            },
            {
              "status": "affected",
              "version": "9.8.3"
            },
            {
              "status": "affected",
              "version": "9.12.1"
            },
            {
              "status": "affected",
              "version": "9.8.1"
            },
            {
              "status": "affected",
              "version": "9.12.2"
            },
            {
              "status": "affected",
              "version": "9.8.2.45"
            },
            {
              "status": "affected",
              "version": "9.8.2"
            },
            {
              "status": "affected",
              "version": "9.8.4"
            },
            {
              "status": "affected",
              "version": "9.14.1"
            },
            {
              "status": "affected",
              "version": "9.12.4"
            },
            {
              "status": "affected",
              "version": "9.8.2.26"
            },
            {
              "status": "affected",
              "version": "9.8.2.24"
            },
            {
              "status": "affected",
              "version": "9.8.2.15"
            },
            {
              "status": "affected",
              "version": "9.8.2.14"
            },
            {
              "status": "affected",
              "version": "9.8.2.35"
            },
            {
              "status": "affected",
              "version": "9.8.2.20"
            },
            {
              "status": "affected",
              "version": "9.8.2.8"
            },
            {
              "status": "affected",
              "version": "9.8.2.17"
            },
            {
              "status": "affected",
              "version": "9.8.2.28"
            },
            {
              "status": "affected",
              "version": "9.8.2.33"
            },
            {
              "status": "affected",
              "version": "9.8.2.38"
            },
            {
              "status": "affected",
              "version": "9.8.4.25"
            },
            {
              "status": "affected",
              "version": "9.12.3.2"
            },
            {
              "status": "affected",
              "version": "9.12.3.7"
            },
            {
              "status": "affected",
              "version": "9.8.3.18"
            },
            {
              "status": "affected",
              "version": "9.8.3.14"
            },
            {
              "status": "affected",
              "version": "9.8.4.15"
            },
            {
              "status": "affected",
              "version": "9.8.4.8"
            },
            {
              "status": "affected",
              "version": "9.8.1.7"
            },
            {
              "status": "affected",
              "version": "9.8.3.29"
            },
            {
              "status": "affected",
              "version": "9.14.1.10"
            },
            {
              "status": "affected",
              "version": "9.12.2.5"
            },
            {
              "status": "affected",
              "version": "9.8.4.22"
            },
            {
              "status": "affected",
              "version": "9.12.3.12"
            },
            {
              "status": "affected",
              "version": "9.8.4.7"
            },
            {
              "status": "affected",
              "version": "9.8.4.17"
            },
            {
              "status": "affected",
              "version": "9.8.3.16"
            },
            {
              "status": "affected",
              "version": "9.8.4.20"
            },
            {
              "status": "affected",
              "version": "9.8.3.11"
            },
            {
              "status": "affected",
              "version": "9.12.1.3"
            },
            {
              "status": "affected",
              "version": "9.8.4.3"
            },
            {
              "status": "affected",
              "version": "9.12.2.4"
            },
            {
              "status": "affected",
              "version": "9.8.4.12"
            },
            {
              "status": "affected",
              "version": "9.12.1.2"
            },
            {
              "status": "affected",
              "version": "9.8.3.26"
            },
            {
              "status": "affected",
              "version": "9.8.1.5"
            },
            {
              "status": "affected",
              "version": "9.12.2.9"
            },
            {
              "status": "affected",
              "version": "9.12.3.9"
            },
            {
              "status": "affected",
              "version": "9.8.3.21"
            },
            {
              "status": "affected",
              "version": "9.8.4.10"
            },
            {
              "status": "affected",
              "version": "9.12.2.1"
            },
            {
              "status": "affected",
              "version": "9.12.4.2"
            },
            {
              "status": "affected",
              "version": "9.14.1.6"
            },
            {
              "status": "affected",
              "version": "9.8.3.8"
            },
            {
              "status": "affected",
              "version": "9.14.1.15"
            },
            {
              "status": "affected",
              "version": "9.14.1.19"
            },
            {
              "status": "affected",
              "version": "9.8.4.26"
            },
            {
              "status": "affected",
              "version": "9.12.4.4"
            },
            {
              "status": "affected",
              "version": "9.14.1.30"
            },
            {
              "status": "affected",
              "version": "9.8.4.29"
            },
            {
              "status": "affected",
              "version": "9.12.4.7"
            },
            {
              "status": "affected",
              "version": "9.14.2"
            },
            {
              "status": "affected",
              "version": "9.12.4.8"
            },
            {
              "status": "affected",
              "version": "9.8.4.32"
            },
            {
              "status": "affected",
              "version": "9.12.4.10"
            },
            {
              "status": "affected",
              "version": "9.14.2.4"
            },
            {
              "status": "affected",
              "version": "9.14.2.8"
            },
            {
              "status": "affected",
              "version": "9.12.4.13"
            },
            {
              "status": "affected",
              "version": "9.8.4.33"
            },
            {
              "status": "affected",
              "version": "9.14.2.13"
            },
            {
              "status": "affected",
              "version": "9.8.4.34"
            },
            {
              "status": "affected",
              "version": "9.12.4.18"
            },
            {
              "status": "affected",
              "version": "9.8.4.35"
            },
            {
              "status": "affected",
              "version": "9.14.2.15"
            },
            {
              "status": "affected",
              "version": "9.12.4.24"
            },
            {
              "status": "affected",
              "version": "9.16.1"
            },
            {
              "status": "affected",
              "version": "9.8.4.39"
            },
            {
              "status": "affected",
              "version": "9.14.3"
            },
            {
              "status": "affected",
              "version": "9.12.4.26"
            },
            {
              "status": "affected",
              "version": "9.16.1.28"
            },
            {
              "status": "affected",
              "version": "9.14.3.1"
            },
            {
              "status": "affected",
              "version": "9.12.4.29"
            },
            {
              "status": "affected",
              "version": "9.14.3.9"
            },
            {
              "status": "affected",
              "version": "9.16.2"
            },
            {
              "status": "affected",
              "version": "9.12.4.30"
            },
            {
              "status": "affected",
              "version": "9.16.2.3"
            },
            {
              "status": "affected",
              "version": "9.8.4.40"
            },
            {
              "status": "affected",
              "version": "9.14.3.11"
            },
            {
              "status": "affected",
              "version": "9.12.4.35"
            },
            {
              "status": "affected",
              "version": "9.8.4.41"
            },
            {
              "status": "affected",
              "version": "9.15.1.1"
            },
            {
              "status": "affected",
              "version": "9.14.3.13"
            },
            {
              "status": "affected",
              "version": "9.16.2.7"
            },
            {
              "status": "affected",
              "version": "9.12.4.37"
            },
            {
              "status": "affected",
              "version": "9.14.3.15"
            },
            {
              "status": "affected",
              "version": "9.17.1"
            },
            {
              "status": "affected",
              "version": "9.16.2.11"
            },
            {
              "status": "affected",
              "version": "9.14.3.18"
            },
            {
              "status": "affected",
              "version": "9.16.2.13"
            },
            {
              "status": "affected",
              "version": "9.12.4.39"
            },
            {
              "status": "affected",
              "version": "9.12.4.38"
            },
            {
              "status": "affected",
              "version": "9.8.4.43"
            },
            {
              "status": "affected",
              "version": "9.14.4"
            },
            {
              "status": "affected",
              "version": "9.16.2.14"
            },
            {
              "status": "affected",
              "version": "9.17.1.7"
            },
            {
              "status": "affected",
              "version": "9.12.4.40"
            },
            {
              "status": "affected",
              "version": "9.16.3.3"
            },
            {
              "status": "affected",
              "version": "9.14.4.6"
            },
            {
              "status": "affected",
              "version": "9.16.3"
            },
            {
              "status": "affected",
              "version": "9.16.3.14"
            },
            {
              "status": "affected",
              "version": "9.17.1.9"
            },
            {
              "status": "affected",
              "version": "9.14.4.7"
            },
            {
              "status": "affected",
              "version": "9.12.4.41"
            },
            {
              "status": "affected",
              "version": "9.17.1.10"
            },
            {
              "status": "affected",
              "version": "9.8.4.44"
            },
            {
              "status": "affected",
              "version": "9.18.1"
            },
            {
              "status": "affected",
              "version": "9.12.4.47"
            },
            {
              "status": "affected",
              "version": "9.14.4.12"
            },
            {
              "status": "affected",
              "version": "9.16.3.15"
            },
            {
              "status": "affected",
              "version": "9.18.1.3"
            },
            {
              "status": "affected",
              "version": "9.17.1.11"
            },
            {
              "status": "affected",
              "version": "9.12.4.48"
            },
            {
              "status": "affected",
              "version": "9.14.4.13"
            },
            {
              "status": "affected",
              "version": "9.18.2"
            },
            {
              "status": "affected",
              "version": "9.16.3.19"
            },
            {
              "status": "affected",
              "version": "9.17.1.13"
            },
            {
              "status": "affected",
              "version": "9.12.4.50"
            },
            {
              "status": "affected",
              "version": "9.14.4.14"
            },
            {
              "status": "affected",
              "version": "9.17.1.15"
            },
            {
              "status": "affected",
              "version": "9.8.4.45"
            },
            {
              "status": "affected",
              "version": "9.12.4.52"
            },
            {
              "status": "affected",
              "version": "9.14.4.15"
            },
            {
              "status": "affected",
              "version": "9.16.3.23"
            },
            {
              "status": "affected",
              "version": "9.18.2.5"
            },
            {
              "status": "affected",
              "version": "9.16.4"
            },
            {
              "status": "affected",
              "version": "9.12.4.54"
            },
            {
              "status": "affected",
              "version": "9.14.4.17"
            },
            {
              "status": "affected",
              "version": "9.8.4.46"
            },
            {
              "status": "affected",
              "version": "9.17.1.20"
            },
            {
              "status": "affected",
              "version": "9.18.2.7"
            },
            {
              "status": "affected",
              "version": "9.19.1"
            },
            {
              "status": "affected",
              "version": "9.16.4.9"
            },
            {
              "status": "affected",
              "version": "9.12.4.55"
            },
            {
              "status": "affected",
              "version": "9.18.2.8"
            },
            {
              "status": "affected",
              "version": "9.14.4.22"
            },
            {
              "status": "affected",
              "version": "9.16.4.14"
            },
            {
              "status": "affected",
              "version": "9.8.4.48"
            },
            {
              "status": "affected",
              "version": "9.18.3"
            },
            {
              "status": "affected",
              "version": "9.19.1.5"
            },
            {
              "status": "affected",
              "version": "9.14.4.23"
            },
            {
              "status": "affected",
              "version": "9.12.4.56"
            },
            {
              "status": "affected",
              "version": "9.16.4.18"
            },
            {
              "status": "affected",
              "version": "9.17.1.30"
            },
            {
              "status": "affected",
              "version": "9.19.1.9"
            },
            {
              "status": "affected",
              "version": "9.18.3.39"
            },
            {
              "status": "affected",
              "version": "9.16.4.19"
            },
            {
              "status": "affected",
              "version": "9.12.4.58"
            },
            {
              "status": "affected",
              "version": "9.19.1.12"
            },
            {
              "status": "affected",
              "version": "9.18.3.46"
            },
            {
              "status": "affected",
              "version": "9.16.4.27"
            },
            {
              "status": "affected",
              "version": "9.19.1.18"
            },
            {
              "status": "affected",
              "version": "9.18.3.53"
            },
            {
              "status": "affected",
              "version": "9.18.3.55"
            },
            {
              "status": "affected",
              "version": "9.16.4.38"
            },
            {
              "status": "affected",
              "version": "9.17.1.33"
            },
            {
              "status": "affected",
              "version": "9.12.4.62"
            },
            {
              "status": "affected",
              "version": "9.16.4.39"
            },
            {
              "status": "affected",
              "version": "9.18.3.56"
            },
            {
              "status": "affected",
              "version": "9.20.1"
            },
            {
              "status": "affected",
              "version": "9.16.4.42"
            },
            {
              "status": "affected",
              "version": "9.19.1.22"
            },
            {
              "status": "affected",
              "version": "9.18.4"
            },
            {
              "status": "affected",
              "version": "9.20.1.5"
            },
            {
              "status": "affected",
              "version": "9.18.4.5"
            },
            {
              "status": "affected",
              "version": "9.19.1.24"
            },
            {
              "status": "affected",
              "version": "9.16.4.48"
            },
            {
              "status": "affected",
              "version": "9.18.4.8"
            },
            {
              "status": "affected",
              "version": "9.20.2"
            },
            {
              "status": "affected",
              "version": "9.19.1.27"
            },
            {
              "status": "affected",
              "version": "9.12.4.65"
            },
            {
              "status": "affected",
              "version": "9.16.4.55"
            },
            {
              "status": "affected",
              "version": "9.18.4.22"
            },
            {
              "status": "affected",
              "version": "9.20.2.10"
            },
            {
              "status": "affected",
              "version": "9.16.4.57"
            },
            {
              "status": "affected",
              "version": "9.19.1.28"
            },
            {
              "status": "affected",
              "version": "9.17.1.39"
            },
            {
              "status": "affected",
              "version": "9.12.4.67"
            },
            {
              "status": "affected",
              "version": "9.14.4.24"
            },
            {
              "status": "affected",
              "version": "9.18.4.24"
            },
            {
              "status": "affected",
              "version": "9.20.2.21"
            },
            {
              "status": "affected",
              "version": "9.16.4.61"
            },
            {
              "status": "affected",
              "version": "9.19.1.31"
            },
            {
              "status": "affected",
              "version": "9.18.4.29"
            },
            {
              "status": "affected",
              "version": "9.20.2.22"
            },
            {
              "status": "affected",
              "version": "9.16.4.62"
            },
            {
              "status": "affected",
              "version": "9.18.4.34"
            },
            {
              "status": "affected",
              "version": "9.20.3"
            },
            {
              "status": "affected",
              "version": "9.16.4.67"
            },
            {
              "status": "affected",
              "version": "9.16.4.70"
            },
            {
              "status": "affected",
              "version": "9.18.4.40"
            },
            {
              "status": "affected",
              "version": "9.22.1.1"
            },
            {
              "status": "affected",
              "version": "9.16.4.71"
            },
            {
              "status": "affected",
              "version": "9.20.3.4"
            },
            {
              "status": "affected",
              "version": "9.18.4.47"
            },
            {
              "status": "affected",
              "version": "9.17.1.45"
            },
            {
              "status": "affected",
              "version": "9.19.1.37"
            },
            {
              "status": "affected",
              "version": "9.17.1.46"
            },
            {
              "status": "affected",
              "version": "9.19.1.38"
            },
            {
              "status": "affected",
              "version": "9.22.1.2"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "Cisco Firepower Threat Defense Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "6.2.3.14"
            },
            {
              "status": "affected",
              "version": "6.4.0.1"
            },
            {
              "status": "affected",
              "version": "6.2.3.7"
            },
            {
              "status": "affected",
              "version": "6.2.3"
            },
            {
              "status": "affected",
              "version": "6.4.0.2"
            },
            {
              "status": "affected",
              "version": "6.2.3.9"
            },
            {
              "status": "affected",
              "version": "6.2.3.1"
            },
            {
              "status": "affected",
              "version": "6.2.3.2"
            },
            {
              "status": "affected",
              "version": "6.4.0.5"
            },
            {
              "status": "affected",
              "version": "6.2.3.10"
            },
            {
              "status": "affected",
              "version": "6.4.0"
            },
            {
              "status": "affected",
              "version": "6.4.0.3"
            },
            {
              "status": "affected",
              "version": "6.2.3.6"
            },
            {
              "status": "affected",
              "version": "6.4.0.4"
            },
            {
              "status": "affected",
              "version": "6.2.3.15"
            },
            {
              "status": "affected",
              "version": "6.2.3.5"
            },
            {
              "status": "affected",
              "version": "6.2.3.4"
            },
            {
              "status": "affected",
              "version": "6.2.3.3"
            },
            {
              "status": "affected",
              "version": "6.2.3.8"
            },
            {
              "status": "affected",
              "version": "6.4.0.6"
            },
            {
              "status": "affected",
              "version": "6.2.3.11"
            },
            {
              "status": "affected",
              "version": "6.2.3.12"
            },
            {
              "status": "affected",
              "version": "6.2.3.13"
            },
            {
              "status": "affected",
              "version": "6.4.0.7"
            },
            {
              "status": "affected",
              "version": "6.4.0.8"
            },
            {
              "status": "affected",
              "version": "6.6.0"
            },
            {
              "status": "affected",
              "version": "6.4.0.9"
            },
            {
              "status": "affected",
              "version": "6.2.3.16"
            },
            {
              "status": "affected",
              "version": "6.6.0.1"
            },
            {
              "status": "affected",
              "version": "6.6.1"
            },
            {
              "status": "affected",
              "version": "6.4.0.10"
            },
            {
              "status": "affected",
              "version": "6.4.0.11"
            },
            {
              "status": "affected",
              "version": "6.6.3"
            },
            {
              "status": "affected",
              "version": "6.6.4"
            },
            {
              "status": "affected",
              "version": "6.4.0.12"
            },
            {
              "status": "affected",
              "version": "7.0.0"
            },
            {
              "status": "affected",
              "version": "6.2.3.17"
            },
            {
              "status": "affected",
              "version": "7.0.0.1"
            },
            {
              "status": "affected",
              "version": "6.6.5"
            },
            {
              "status": "affected",
              "version": "7.0.1"
            },
            {
              "status": "affected",
              "version": "7.1.0"
            },
            {
              "status": "affected",
              "version": "6.4.0.13"
            },
            {
              "status": "affected",
              "version": "6.6.5.1"
            },
            {
              "status": "affected",
              "version": "6.2.3.18"
            },
            {
              "status": "affected",
              "version": "7.0.1.1"
            },
            {
              "status": "affected",
              "version": "6.4.0.14"
            },
            {
              "status": "affected",
              "version": "7.1.0.1"
            },
            {
              "status": "affected",
              "version": "6.6.5.2"
            },
            {
              "status": "affected",
              "version": "7.0.2"
            },
            {
              "status": "affected",
              "version": "6.4.0.15"
            },
            {
              "status": "affected",
              "version": "7.2.0"
            },
            {
              "status": "affected",
              "version": "7.0.2.1"
            },
            {
              "status": "affected",
              "version": "7.0.3"
            },
            {
              "status": "affected",
              "version": "6.6.7"
            },
            {
              "status": "affected",
              "version": "7.1.0.2"
            },
            {
              "status": "affected",
              "version": "7.2.0.1"
            },
            {
              "status": "affected",
              "version": "7.0.4"
            },
            {
              "status": "affected",
              "version": "7.2.1"
            },
            {
              "status": "affected",
              "version": "7.0.5"
            },
            {
              "status": "affected",
              "version": "6.4.0.16"
            },
            {
              "status": "affected",
              "version": "7.3.0"
            },
            {
              "status": "affected",
              "version": "7.2.2"
            },
            {
              "status": "affected",
              "version": "7.2.3"
            },
            {
              "status": "affected",
              "version": "6.6.7.1"
            },
            {
              "status": "affected",
              "version": "7.3.1"
            },
            {
              "status": "affected",
              "version": "7.1.0.3"
            },
            {
              "status": "affected",
              "version": "7.2.4"
            },
            {
              "status": "affected",
              "version": "7.0.6"
            },
            {
              "status": "affected",
              "version": "7.2.5"
            },
            {
              "status": "affected",
              "version": "7.2.4.1"
            },
            {
              "status": "affected",
              "version": "7.3.1.1"
            },
            {
              "status": "affected",
              "version": "7.4.0"
            },
            {
              "status": "affected",
              "version": "6.4.0.17"
            },
            {
              "status": "affected",
              "version": "7.0.6.1"
            },
            {
              "status": "affected",
              "version": "7.2.5.1"
            },
            {
              "status": "affected",
              "version": "7.4.1"
            },
            {
              "status": "affected",
              "version": "7.2.6"
            },
            {
              "status": "affected",
              "version": "7.0.6.2"
            },
            {
              "status": "affected",
              "version": "7.4.1.1"
            },
            {
              "status": "affected",
              "version": "6.6.7.2"
            },
            {
              "status": "affected",
              "version": "6.4.0.18"
            },
            {
              "status": "affected",
              "version": "7.2.7"
            },
            {
              "status": "affected",
              "version": "7.2.5.2"
            },
            {
              "status": "affected",
              "version": "7.3.1.2"
            },
            {
              "status": "affected",
              "version": "7.2.8"
            },
            {
              "status": "affected",
              "version": "7.6.0"
            },
            {
              "status": "affected",
              "version": "7.4.2"
            },
            {
              "status": "affected",
              "version": "7.2.8.1"
            },
            {
              "status": "affected",
              "version": "7.0.6.3"
            },
            {
              "status": "affected",
              "version": "7.4.2.1"
            },
            {
              "status": "affected",
              "version": "7.2.9"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the DHCP client functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to exhaust available memory.\r\n\r\nThis vulnerability is due to improper validation of incoming DHCP packets. An attacker could exploit this vulnerability by repeatedly sending crafted DHCPv4 packets to an affected device. A successful exploit could allow the attacker to exhaust available memory, which would affect availability of services and prevent new processes from starting, resulting in a Denial of Service (DoS) condition that would require a manual reboot.\r\nNote: On Cisco Secure FTD Software, this vulnerability does not affect management interfaces."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-401",
              "description": "Missing Release of Memory after Effective Lifetime",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-14T16:28:16.508Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-asaftd-dhcp-qj7nGs4N",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dhcp-qj7nGs4N"
        }
      ],
      "source": {
        "advisory": "cisco-sa-asaftd-dhcp-qj7nGs4N",
        "defects": [
          "CSCwm08235"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco Adaptive Security Appliance and Firepower Threat Defense Software DHCP Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2025-20135",
    "datePublished": "2025-08-14T16:28:16.508Z",
    "dateReserved": "2024-10-10T19:15:13.213Z",
    "dateUpdated": "2025-08-14T19:21:28.891Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.