CVE-2025-20333 (GCVE-0-2025-20333)
Vulnerability from cvelistv5 – Published: 2025-09-25 16:12 – Updated: 2026-02-26 17:47Summary
A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device.
This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device.
Severity
9.9 (Critical)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-26 03:55 UTC
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/c… | |
| https://sec.cloudapps.cisco.com/security/center/r… | vendor-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software |
Affected:
9.8.1
Affected: 9.8.1.5 Affected: 9.8.1.7 Affected: 9.8.2 Affected: 9.8.2.8 Affected: 9.8.2.14 Affected: 9.8.2.15 Affected: 9.8.2.17 Affected: 9.8.2.20 Affected: 9.8.2.24 Affected: 9.8.2.26 Affected: 9.8.2.28 Affected: 9.8.2.33 Affected: 9.8.2.35 Affected: 9.8.2.38 Affected: 9.8.3.8 Affected: 9.8.3.11 Affected: 9.8.3.14 Affected: 9.8.3.16 Affected: 9.8.3.18 Affected: 9.8.3.21 Affected: 9.8.3 Affected: 9.8.3.26 Affected: 9.8.3.29 Affected: 9.8.4 Affected: 9.8.4.3 Affected: 9.8.4.7 Affected: 9.8.4.8 Affected: 9.8.4.10 Affected: 9.8.4.12 Affected: 9.8.4.15 Affected: 9.8.4.17 Affected: 9.8.2.45 Affected: 9.8.4.25 Affected: 9.8.4.20 Affected: 9.8.4.22 Affected: 9.8.4.26 Affected: 9.8.4.29 Affected: 9.8.4.32 Affected: 9.8.4.33 Affected: 9.8.4.34 Affected: 9.8.4.35 Affected: 9.8.4.39 Affected: 9.8.4.40 Affected: 9.8.4.41 Affected: 9.8.4.43 Affected: 9.8.4.44 Affected: 9.8.4.45 Affected: 9.8.4.46 Affected: 9.8.4.48 Affected: 9.12.1 Affected: 9.12.1.2 Affected: 9.12.1.3 Affected: 9.12.2 Affected: 9.12.2.4 Affected: 9.12.2.5 Affected: 9.12.2.9 Affected: 9.12.3 Affected: 9.12.3.2 Affected: 9.12.3.7 Affected: 9.12.4 Affected: 9.12.3.12 Affected: 9.12.3.9 Affected: 9.12.2.1 Affected: 9.12.4.2 Affected: 9.12.4.4 Affected: 9.12.4.7 Affected: 9.12.4.10 Affected: 9.12.4.13 Affected: 9.12.4.8 Affected: 9.12.4.18 Affected: 9.12.4.24 Affected: 9.12.4.26 Affected: 9.12.4.29 Affected: 9.12.4.30 Affected: 9.12.4.35 Affected: 9.12.4.37 Affected: 9.12.4.38 Affected: 9.12.4.39 Affected: 9.12.4.40 Affected: 9.12.4.41 Affected: 9.12.4.47 Affected: 9.12.4.48 Affected: 9.12.4.50 Affected: 9.12.4.52 Affected: 9.12.4.54 Affected: 9.12.4.55 Affected: 9.12.4.56 Affected: 9.12.4.58 Affected: 9.12.4.62 Affected: 9.12.4.65 Affected: 9.12.4.67 Affected: 9.14.1 Affected: 9.14.1.10 Affected: 9.14.1.6 Affected: 9.14.1.15 Affected: 9.14.1.19 Affected: 9.14.1.30 Affected: 9.14.2 Affected: 9.14.2.4 Affected: 9.14.2.8 Affected: 9.14.2.13 Affected: 9.14.2.15 Affected: 9.14.3 Affected: 9.14.3.1 Affected: 9.14.3.9 Affected: 9.14.3.11 Affected: 9.14.3.13 Affected: 9.14.3.18 Affected: 9.14.3.15 Affected: 9.14.4 Affected: 9.14.4.6 Affected: 9.14.4.7 Affected: 9.14.4.12 Affected: 9.14.4.13 Affected: 9.14.4.14 Affected: 9.14.4.15 Affected: 9.14.4.17 Affected: 9.14.4.22 Affected: 9.14.4.23 Affected: 9.14.4.24 Affected: 9.16.1 Affected: 9.16.1.28 Affected: 9.16.2 Affected: 9.16.2.3 Affected: 9.16.2.7 Affected: 9.16.2.11 Affected: 9.16.2.13 Affected: 9.16.2.14 Affected: 9.16.3 Affected: 9.16.3.3 Affected: 9.16.3.14 Affected: 9.16.3.15 Affected: 9.16.3.19 Affected: 9.16.3.23 Affected: 9.16.4 Affected: 9.16.4.9 Affected: 9.16.4.14 Affected: 9.16.4.18 Affected: 9.16.4.19 Affected: 9.16.4.27 Affected: 9.16.4.38 Affected: 9.16.4.39 Affected: 9.16.4.42 Affected: 9.16.4.48 Affected: 9.16.4.55 Affected: 9.16.4.57 Affected: 9.16.4.61 Affected: 9.16.4.62 Affected: 9.16.4.67 Affected: 9.16.4.70 Affected: 9.16.4.71 Affected: 9.16.4.76 Affected: 9.16.4.82 Affected: 9.16.4.84 Affected: 9.17.1 Affected: 9.17.1.7 Affected: 9.17.1.9 Affected: 9.17.1.10 Affected: 9.17.1.11 Affected: 9.17.1.13 Affected: 9.17.1.15 Affected: 9.17.1.20 Affected: 9.17.1.30 Affected: 9.17.1.33 Affected: 9.17.1.39 Affected: 9.18.1 Affected: 9.18.1.3 Affected: 9.18.2 Affected: 9.18.2.5 Affected: 9.18.2.7 Affected: 9.18.2.8 Affected: 9.18.3 Affected: 9.18.3.39 Affected: 9.18.3.46 Affected: 9.18.3.53 Affected: 9.18.3.55 Affected: 9.18.3.56 Affected: 9.18.4 Affected: 9.18.4.5 Affected: 9.18.4.8 Affected: 9.18.4.22 Affected: 9.18.4.24 Affected: 9.18.4.29 Affected: 9.18.4.34 Affected: 9.18.4.40 Affected: 9.19.1 Affected: 9.19.1.5 Affected: 9.19.1.9 Affected: 9.19.1.12 Affected: 9.19.1.18 Affected: 9.19.1.22 Affected: 9.19.1.24 Affected: 9.19.1.27 Affected: 9.19.1.28 Affected: 9.19.1.31 Affected: 9.20.1 Affected: 9.20.1.5 Affected: 9.20.2 Affected: 9.20.2.10 Affected: 9.20.2.21 Affected: 9.20.2.22 Affected: 9.20.3 Affected: 9.20.3.4 Affected: 9.22.1.1 Affected: 9.22.1.2 |
guessed | |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
6.2.3
Affected: 6.2.3.1 Affected: 6.2.3.2 Affected: 6.2.3.3 Affected: 6.2.3.4 Affected: 6.2.3.5 Affected: 6.2.3.6 Affected: 6.2.3.7 Affected: 6.2.3.8 Affected: 6.2.3.10 Affected: 6.2.3.11 Affected: 6.2.3.9 Affected: 6.2.3.12 Affected: 6.2.3.13 Affected: 6.2.3.14 Affected: 6.2.3.15 Affected: 6.2.3.16 Affected: 6.2.3.17 Affected: 6.2.3.18 Affected: 6.6.0 Affected: 6.6.0.1 Affected: 6.6.1 Affected: 6.6.3 Affected: 6.6.4 Affected: 6.6.5 Affected: 6.6.5.1 Affected: 6.6.5.2 Affected: 6.6.7 Affected: 6.6.7.1 Affected: 6.6.7.2 Affected: 6.4.0 Affected: 6.4.0.1 Affected: 6.4.0.3 Affected: 6.4.0.2 Affected: 6.4.0.4 Affected: 6.4.0.5 Affected: 6.4.0.6 Affected: 6.4.0.7 Affected: 6.4.0.8 Affected: 6.4.0.9 Affected: 6.4.0.10 Affected: 6.4.0.11 Affected: 6.4.0.12 Affected: 6.4.0.13 Affected: 6.4.0.14 Affected: 6.4.0.15 Affected: 6.4.0.16 Affected: 6.4.0.17 Affected: 6.4.0.18 Affected: 7.0.0 Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.0.4 Affected: 7.0.5 Affected: 7.0.6 Affected: 7.0.6.1 Affected: 7.0.6.2 Affected: 7.0.6.3 Affected: 7.0.7 Affected: 7.0.8 Affected: 7.1.0 Affected: 7.1.0.1 Affected: 7.1.0.2 Affected: 7.1.0.3 Affected: 7.2.0 Affected: 7.2.0.1 Affected: 7.2.1 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.2.4 Affected: 7.2.4.1 Affected: 7.2.5 Affected: 7.2.5.1 Affected: 7.2.6 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.2.8 Affected: 7.2.8.1 Affected: 7.3.0 Affected: 7.3.1 Affected: 7.3.1.1 Affected: 7.3.1.2 Affected: 7.4.0 Affected: 7.4.1 Affected: 7.4.1.1 Affected: 7.4.2 Affected: 7.4.2.1 Affected: 7.4.2.2 Affected: 7.4.2.3 Affected: 7.6.0 |
guessed |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: f66e584e-b3b3-4e66-b5e5-9ebc17381187
Exploited: Yes
Timestamps
First Seen: 2025-09-25
Asserted: 2025-09-25
Scope
Notes: KEV entry: Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow Vulnerability | Affected: Cisco / Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense | Description: Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Software VPN Web Server contain a buffer overflow vulnerability that allows for remote code execution. This vulnerability could be chained with CVE-2025-20362. | Required action: The KEV due date refers to the deadline by which FCEB agencies are expected to review and begin implementing the guidance outlined in Emergency Directive (ED) 25-03 (URL listed below in Notes). Agencies must follow the mitigation steps provided by CISA (URL listed below in Notes) and vendor’s instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available. | Due date: 2025-09-26 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): CISA Mitigation Instructions: https://www.cisa.gov/news-events/directives/ed-25-03-identify-and-mitigate-potential-compromise-cisco-devices ; https://www.cisa.gov/news-events/directives/supplemental-direction-ed-25-03-core-dump-and-hunt-instructions ; https://www.cisa.gov/eviction-strategies-tool/create-from-template ; https://sec.cloudapps.cisco.com/security/center/resources/asa_ftd_continued_attacks ; https://sec.cloudapps.cisco.com/security/center/private/resources/asa_ftd_continued_attacks#Details ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-z5xP8EUB ; https://nvd.nist.gov/vuln/detail/CVE-2025-20333
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-120 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense |
| Due Date | 2025-09-26 |
| Date Added | 2025-09-25 |
| Vendorproject | Cisco |
| Vulnerabilityname | Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:25 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: fca33208-a20d-4831-ae69-9555c9b8e015
Exploited: Yes
Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: KEVIntel entry: A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense... | Affected: Cisco / Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software | CVSS: 9.9 (CRITICAL) | EPSS: 0.29197 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense... |
| Vendor | Cisco |
| Product | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software |
| Added Date | 2026-06-01T10:41:10.527Z |
| Cvss Score | 9.9 |
| Epss Score | 0.29197 |
| Cvss Severity | CRITICAL |
| Epss Percentile | 0.97923 |
| Used In Malware | unknown |
| Ahead Of Cisa Kev |
|
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:03 UTC
| Updated: 2026-07-10 06:14 UTC
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"value": "A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device.\r\n\r This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device."
}
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"value": "The Cisco Product Security Incident Response Team (PSIRT) is aware of attempted exploitation of this vulnerability. Cisco continues to strongly recommend that customers upgrade to a fixed software release to remediate this vulnerability."
}
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"attackVector": "NETWORK",
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"baseScore": 9.9,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
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"description": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
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"dateUpdated": "2025-11-05T21:03:29.299Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
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"name": "cisco-sa-asaftd-webvpn-z5xP8EUB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-z5xP8EUB"
}
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"assignerShortName": "cisco",
"cveId": "CVE-2025-20333",
"datePublished": "2025-09-25T16:12:14.308Z",
"dateReserved": "2024-10-10T19:15:13.255Z",
"dateUpdated": "2026-02-26T17:47:58.577Z",
"state": "PUBLISHED"
},
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"cveID": "CVE-2025-20333",
"cwes": "[\"CWE-120\"]",
"dateAdded": "2025-09-25",
"dueDate": "2025-09-26",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "CISA Mitigation Instructions: https://www.cisa.gov/news-events/directives/ed-25-03-identify-and-mitigate-potential-compromise-cisco-devices ; https://www.cisa.gov/news-events/directives/supplemental-direction-ed-25-03-core-dump-and-hunt-instructions ; https://www.cisa.gov/eviction-strategies-tool/create-from-template ; https://sec.cloudapps.cisco.com/security/center/resources/asa_ftd_continued_attacks ; https://sec.cloudapps.cisco.com/security/center/private/resources/asa_ftd_continued_attacks#Details ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-z5xP8EUB ; https://nvd.nist.gov/vuln/detail/CVE-2025-20333",
"product": "Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense",
"requiredAction": "The KEV due date refers to the deadline by which FCEB agencies are expected to review and begin implementing the guidance outlined in Emergency Directive (ED) 25-03 (URL listed below in Notes). Agencies must follow the mitigation steps provided by CISA (URL listed below in Notes) and vendor\u2019s instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.",
"shortDescription": "Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Software VPN Web Server contain a buffer overflow vulnerability that allows for remote code execution. This vulnerability could be chained with CVE-2025-20362.",
"vendorProject": "Cisco",
"vulnerabilityName": "Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow Vulnerability"
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"date": "2026-09-14",
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"percentile": "0.99355"
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"nvd": "{\"cve\":{\"id\":\"CVE-2025-20333\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2025-09-25T16:15:32.073\",\"lastModified\":\"2026-08-11T19:33:44.513\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device.\\r\\n\\r This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device.\"}],\"affected\":[{\"source\":\"psirt@cisco.com\",\"affectedData\":[{\"vendor\":\"Cisco\",\"product\":\"Cisco Secure Firewall Adaptive Security Appliance (ASA) 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Secure Firewall Threat Defense (FTD) Software\",\"versions\":[{\"version\":\"6.2.3\",\"status\":\"affected\"},{\"version\":\"6.2.3.1\",\"status\":\"affected\"},{\"version\":\"6.2.3.2\",\"status\":\"affected\"},{\"version\":\"6.2.3.3\",\"status\":\"affected\"},{\"version\":\"6.2.3.4\",\"status\":\"affected\"},{\"version\":\"6.2.3.5\",\"status\":\"affected\"},{\"version\":\"6.2.3.6\",\"status\":\"affected\"},{\"version\":\"6.2.3.7\",\"status\":\"affected\"},{\"version\":\"6.2.3.8\",\"status\":\"affected\"},{\"version\":\"6.2.3.10\",\"status\":\"affected\"},{\"version\":\"6.2.3.11\",\"status\":\"affected\"},{\"version\":\"6.2.3.9\",\"status\":\"affected\"},{\"version\":\"6.2.3.12\",\"status\":\"affected\"},{\"version\":\"6.2.3.13\",\"status\":\"affected\"},{\"version\":\"6.2.3.14\",\"status\":\"affected\"},{\"version\":\"6.2.3.15\",\"status\":\"affected\"},{\"version\":\"6.2.3.16\",\"status\":\"affected\"},{\"version\":\"6.2.3.17\",\"status\":\"affected\"},{\"version\":\"6.2.3.18\",\"status\":\"affected\"},{\"version\":\"6.6.0\",\"status\":\"affected\"},{\"version\":\"6.6.0.1\",\"status\":\"affected\"},{\"version\":\"6.6.1\",\"status\":\"affected\"},{\"version\":\"6.6.3\",\"status\":\"affected\"},{\"version\":\"6.6.4\",\"status\":\"affected\"},{\"version\":\"6.6.5\",\"status\":\"affected\"},{\"version\":\"6.6.5.1\",\"status\":\"affected\"},{\"version\":\"6.6.5.2\",\"status\":\"affected\"},{\"version\":\"6.6.7\",\"status\":\"affected\"},{\"version\":\"6.6.7.1\",\"status\":\"affected\"},{\"version\":\"6.6.7.2\",\"status\":\"affected\"},{\"version\":\"6.4.0\",\"status\":\"affected\"},{\"version\":\"6.4.0.1\",\"status\":\"affected\"},{\"version\":\"6.4.0.3\",\"status\":\"affected\"},{\"version\":\"6.4.0.2\",\"status\":\"affected\"},{\"version\":\"6.4.0.4\",\"status\":\"affected\"},{\"version\":\"6.4.0.5\",\"status\":\"affected\"},{\"version\":\"6.4.0.6\",\"status\":\"affected\"},{\"version\":\"6.4.0.7\",\"status\":\"affected\"},{\"version\":\"6.4.0.8\",\"status\":\"affected\"},{\"version\":\"6.4.0.9\",\"status\":\"affected\"},{\"version\":\"6.4.0.10\",\"status\":\"affected\"},{\"version\":\"6.4.0.11\",\"status\":\"affected\"},{\"version\":\"6.4.0.12\",\"status\":\"affected\"},{\"version\":\"6.4.0.13\",\"status\":\"affected\"},{\"version\":\"6.4.0.14\",\"status\":\"affected\"},{\"version\":\"6.4.0.15\",\"status\":\"affected\"},{\"version\":\"6.4.0.16\",\"status\":\"affected\"},{\"version\":\"6.4.0.17\",\"status\":\"affected\"},{\"version\":\"6.4.0.18\",\"status\":\"affected\"},{\"version\":\"7.0.0\",\"status\":\"affected\"},{\"version\":\"7.0.0.1\",\"status\":\"affected\"},{\"version\":\"7.0.1\",\"status\":\"affected\"},{\"version\":\"7.0.1.1\",\"status\":\"affected\"},{\"version\":\"7.0.2\",\"status\":\"affected\"},{\"version\":\"7.0.2.1\",\"status\":\"affected\"},{\"version\":\"7.0.3\",\"status\":\"affected\"},{\"version\":\"7.0.4\",\"status\":\"affected\"},{\"version\":\"7.0.5\",\"status\":\"affected\"},{\"version\":\"7.0.6\",\"status\":\"affected\"},{\"version\":\"7.0.6.1\",\"status\":\"affected\"},{\"version\":\"7.0.6.2\",\"status\":\"affected\"},{\"version\":\"7.0.6.3\",\"status\":\"affected\"},{\"version\":\"7.0.7\",\"status\":\"affected\"},{\"version\":\"7.0.8\",\"status\":\"affected\"},{\"version\":\"7.1.0\",\"status\":\"affected\"},{\"version\":\"7.1.0.1\",\"status\":\"affected\"},{\"version\":\"7.1.0.2\",\"status\":\"affected\"},{\"version\":\"7.1.0.3\",\"status\":\"affected\"},{\"version\":\"7.2.0\",\"status\":\"affected\"},{\"version\":\"7.2.0.1\",\"status\":\"affected\"},{\"version\":\"7.2.1\",\"status\":\"affected\"},{\"version\":\"7.2.2\",\"status\":\"affected\"},{\"version\":\"7.2.3\",\"status\":\"affected\"},{\"version\":\"7.2.4\",\"status\":\"affected\"},{\"version\":\"7.2.4.1\",\"status\":\"affected\"},{\"version\":\"7.2.5\",\"status\":\"affected\"},{\"version\":\"7.2.5.1\",\"status\":\"affected\"},{\"version\":\"7.2.6\",\"status\":\"affected\"},{\"version\":\"7.2.7\",\"status\":\"affected\"},{\"version\":\"7.2.5.2\",\"status\":\"affected\"},{\"version\":\"7.2.8\",\"status\":\"affected\"},{\"version\":\"7.2.8.1\",\"status\":\"affected\"},{\"version\":\"7.3.0\",\"status\":\"affected\"},{\"version\":\"7.3.1\",\"status\":\"affected\"},{\"version\":\"7.3.1.1\",\"status\":\"affected\"},{\"version\":\"7.3.1.2\",\"status\":\"affected\"},{\"version\":\"7.4.0\",\"status\":\"affected\"},{\"version\":\"7.4.1\",\"status\":\"affected\"},{\"version\":\"7.4.1.1\",\"status\":\"affected\"},{\"version\":\"7.4.2\",\"status\":\"affected\"},{\"version\":\"7.4.2.1\",\"status\":\"affected\"},{\"version\":\"7.4.2.2\",\"status\":\"affected\"},{\"version\":\"7.4.2.3\",\"status\":\"affected\"},{\"version\":\"7.6.0\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":9.9,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.1,\"impactScore\":6.0}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-09-26T03:55:14.003793Z\",\"id\":\"CVE-2025-20333\",\"options\":[{\"exploitation\":\"active\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA 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Agencies must follow the mitigation steps provided by CISA (URL listed below in Notes) and vendor\u2019s instructions (URL listed below in Notes). 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"redhat_vex": {
"current_release_date": "2026-03-27T08:54:03+00:00",
"cve": "CVE-2025-20333",
"id": "CVE-2025-20333",
"initial_release_date": "2025-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CVE-2025-20333",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-20333.json",
"version": "3"
},
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\"version\": \"6.6.7.2\"}, {\"status\": \"affected\", \"version\": \"6.4.0\"}, {\"status\": \"affected\", \"version\": \"6.4.0.1\"}, {\"status\": \"affected\", \"version\": \"6.4.0.3\"}, {\"status\": \"affected\", \"version\": \"6.4.0.2\"}, {\"status\": \"affected\", \"version\": \"6.4.0.4\"}, {\"status\": \"affected\", \"version\": \"6.4.0.5\"}, {\"status\": \"affected\", \"version\": \"6.4.0.6\"}, {\"status\": \"affected\", \"version\": \"6.4.0.7\"}, {\"status\": \"affected\", \"version\": \"6.4.0.8\"}, {\"status\": \"affected\", \"version\": \"6.4.0.9\"}, {\"status\": \"affected\", \"version\": \"6.4.0.10\"}, {\"status\": \"affected\", \"version\": \"6.4.0.11\"}, {\"status\": \"affected\", \"version\": \"6.4.0.12\"}, {\"status\": \"affected\", \"version\": \"6.4.0.13\"}, {\"status\": \"affected\", \"version\": \"6.4.0.14\"}, {\"status\": \"affected\", \"version\": \"6.4.0.15\"}, {\"status\": \"affected\", \"version\": \"6.4.0.16\"}, {\"status\": \"affected\", \"version\": \"6.4.0.17\"}, {\"status\": \"affected\", \"version\": \"6.4.0.18\"}, {\"status\": \"affected\", \"version\": \"7.0.0\"}, {\"status\": \"affected\", \"version\": \"7.0.0.1\"}, {\"status\": \"affected\", \"version\": \"7.0.1\"}, {\"status\": \"affected\", \"version\": \"7.0.1.1\"}, {\"status\": \"affected\", \"version\": \"7.0.2\"}, {\"status\": \"affected\", \"version\": \"7.0.2.1\"}, {\"status\": \"affected\", \"version\": \"7.0.3\"}, {\"status\": \"affected\", \"version\": \"7.0.4\"}, {\"status\": \"affected\", \"version\": \"7.0.5\"}, {\"status\": \"affected\", \"version\": \"7.0.6\"}, {\"status\": \"affected\", \"version\": \"7.0.6.1\"}, {\"status\": \"affected\", \"version\": \"7.0.6.2\"}, {\"status\": \"affected\", \"version\": \"7.0.6.3\"}, {\"status\": \"affected\", \"version\": \"7.0.7\"}, {\"status\": \"affected\", \"version\": \"7.0.8\"}, {\"status\": \"affected\", \"version\": \"7.1.0\"}, {\"status\": \"affected\", \"version\": \"7.1.0.1\"}, {\"status\": \"affected\", \"version\": \"7.1.0.2\"}, {\"status\": \"affected\", \"version\": \"7.1.0.3\"}, {\"status\": \"affected\", \"version\": \"7.2.0\"}, {\"status\": \"affected\", \"version\": \"7.2.0.1\"}, {\"status\": \"affected\", \"version\": \"7.2.1\"}, {\"status\": \"affected\", \"version\": \"7.2.2\"}, {\"status\": \"affected\", \"version\": \"7.2.3\"}, {\"status\": \"affected\", \"version\": \"7.2.4\"}, {\"status\": \"affected\", \"version\": \"7.2.4.1\"}, {\"status\": \"affected\", \"version\": \"7.2.5\"}, {\"status\": \"affected\", \"version\": \"7.2.5.1\"}, {\"status\": \"affected\", \"version\": \"7.2.6\"}, {\"status\": \"affected\", \"version\": \"7.2.7\"}, {\"status\": \"affected\", \"version\": \"7.2.5.2\"}, {\"status\": \"affected\", \"version\": \"7.2.8\"}, {\"status\": \"affected\", \"version\": \"7.2.8.1\"}, {\"status\": \"affected\", \"version\": \"7.3.0\"}, {\"status\": \"affected\", \"version\": \"7.3.1\"}, {\"status\": \"affected\", \"version\": \"7.3.1.1\"}, {\"status\": \"affected\", \"version\": \"7.3.1.2\"}, {\"status\": \"affected\", \"version\": \"7.4.0\"}, {\"status\": \"affected\", \"version\": \"7.4.1\"}, {\"status\": \"affected\", \"version\": \"7.4.1.1\"}, {\"status\": \"affected\", \"version\": \"7.4.2\"}, {\"status\": \"affected\", \"version\": \"7.4.2.1\"}, {\"status\": \"affected\", \"version\": \"7.4.2.2\"}, {\"status\": \"affected\", \"version\": \"7.4.2.3\"}, {\"status\": \"affected\", \"version\": \"7.6.0\"}]}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco Product Security Incident Response Team (PSIRT) is aware of attempted exploitation of this vulnerability. Cisco continues to strongly recommend that customers upgrade to a fixed software release to remediate this vulnerability.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-z5xP8EUB\", \"name\": \"cisco-sa-asaftd-webvpn-z5xP8EUB\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device.\\r\\n\\r This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-120\", \"description\": \"Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2025-11-05T21:03:29.299Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2025-20333\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-26T17:47:58.577Z\", \"dateReserved\": \"2024-10-10T19:15:13.255Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2025-09-25T16:12:14.308Z\", \"assignerShortName\": \"cisco\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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