Vulnerability-Lookup

CVE-2025-36855 (GCVE-0-2025-36855)

Vulnerability from cvelistv5 – Published: 2025-09-08 13:57 – Updated: 2025-09-08 14:06

Title

EOL .NET 6.0 Runtime Remote Code Execution Vulnerability

Summary

A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll due to buffer over-read. Per CWE-126: Buffer Over-read https://cwe.mitre.org/data/definitions/126.html , Buffer Over-read is when a product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. This issue affects EOL ASP.NET 6.0.0 <= 6.0.36 as represented in this CVE, as well as 8.0.0 <= 8.0.11 & <= 9.0.0 as represented in CVE-2025-21176. Additionally, if you've deployed self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed. NOTE: This CVE affects only End Of Life (EOL) software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-09-08 14:06 UTC

CWE

CWE-126 - Buffer Over-read

Assigner

HeroDevs mitre root

References

2 references

URL	Tags
https://www.herodevs.com/vulnerability-directory/…	third-party-advisory
https://msrc.microsoft.com/update-guide/vulnerabi…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
Microsoft	.NET 6.0	Affected: 6.0.0 , < 6.0.36 (custom)	guessed

Date Public

2025-01-14 08:00

Show details on NVD website

JSON

To clipboard

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BDU:2025-12584 (CVE-2025-36855)

Vulnerability from fstec – Published: 2025-10-08 – Updated: 2025-10-08 – View on bdu.fstec.ru Fixed

Title

Уязвимость программной платформы Microsoft .NET, Microsoft .NET Framework и редактора исходного кода Visual Studio, связанная с выходом операции за границы буфера в памяти, позволяющая нарушителю выполнить произвольный код

Summary

Уязвимость программной платформы Microsoft .NET, Microsoft .NET Framework и редактора исходного кода Visual Studio связана с выходом операции за границы буфера в памяти. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, выполнить произвольный код

Severity

10.0 (High) CVSS 2.0


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

8.8 (High) CVSS 3.1


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-126 - Чтение из памяти, следующей за границей окончания буфера

Aliases

CVE-2025-36855

References

2 references

URL
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176
http://repo.red-soft.ru/redos/7.3c/x86_64/updates/

Impacted products

14 products from 2 vendors

Vendors

Microsoft Corp, ООО «Ред Софт»

Products

Microsoft .NET Framework 3.5, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.7, Microsoft .NET Framework 4.6.2, Microsoft Visual Studio 2015 Update 3, Microsoft .NET Framework 4.7.1, Microsoft .NET Framework 4.7.2, Microsoft .NET Framework 4.8, Microsoft Visual Studio 2017, РЕД ОС (запись в едином реестре российских программ №3751), Microsoft Visual Studio 2022, Microsoft .NET Framework 4.8.1, Microsoft Visual Studio 2019, .NET

Versions

- (Microsoft .NET Framework 3.5), - (Microsoft .NET Framework 4.6), - (Microsoft .NET Framework 4.7), - (Microsoft .NET Framework 4.6.2), - (Microsoft Visual Studio 2015 Update 3), - (Microsoft .NET Framework 4.7.1), - (Microsoft .NET Framework 4.7.2), - (Microsoft .NET Framework 4.8), от 15.0 до 15.9 (Microsoft Visual Studio 2017), 7.3 (РЕД ОС), 17.6 (Microsoft Visual Studio 2022), - (Microsoft .NET Framework 4.8.1), от 16.0 до 16.10 включительно (Microsoft Visual Studio 2019), 8.0 (.NET), 9.0 (.NET), 17.12 (Microsoft Visual Studio 2022), 17.10 (Microsoft Visual Studio 2022), 17.8 (Microsoft Visual Studio 2022)

Product types

Application software, Operating system

Platforms

ООО «Ред Софт» РЕД ОС 7.3 (запись в едином реестре российских программ №3751)

Mitigations

Использование рекомендаций производителя: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176 Для РедОС: http://repo.red-soft.ru/redos/7.3c/x86_64/updates/

JSON

To clipboard

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  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "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": "Microsoft Corp, \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "- (Microsoft .NET Framework 3.5), - (Microsoft .NET Framework 4.6), - (Microsoft .NET Framework 4.7), - (Microsoft .NET Framework 4.6.2), - (Microsoft Visual Studio 2015 Update 3), - (Microsoft .NET Framework 4.7.1), - (Microsoft .NET Framework 4.7.2), - (Microsoft .NET Framework 4.8), \u043e\u0442 15.0 \u0434\u043e 15.9 (Microsoft Visual Studio 2017), 7.3 (\u0420\u0415\u0414 \u041e\u0421), 17.6 (Microsoft Visual Studio 2022), - (Microsoft .NET Framework 4.8.1), \u043e\u0442 16.0 \u0434\u043e 16.10 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Microsoft Visual Studio 2019), 8.0 (.NET), 9.0 (.NET), 17.12 (Microsoft Visual Studio 2022), 17.10 (Microsoft Visual Studio 2022), 17.8 (Microsoft Visual Studio 2022)",
  "\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\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f:\nhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176\n\n\u0414\u043b\u044f \u0420\u0435\u0434\u041e\u0421:\nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "14.01.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "08.10.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "08.10.2025",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2025-12584",
  "\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-2025-36855",
  "\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": "Microsoft .NET Framework 3.5, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.7, Microsoft .NET Framework 4.6.2, Microsoft Visual Studio 2015 Update 3, Microsoft .NET Framework 4.7.1, Microsoft .NET Framework 4.7.2, Microsoft .NET Framework 4.8, Microsoft Visual Studio 2017, \u0420\u0415\u0414 \u041e\u0421 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), Microsoft Visual Studio 2022, Microsoft .NET Framework 4.8.1, Microsoft Visual Studio 2019, .NET",
  "\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": "\u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 7.3  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751)",
  "\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 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Microsoft .NET, Microsoft .NET Framework \u0438 \u0440\u0435\u0434\u0430\u043a\u0442\u043e\u0440\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 Visual Studio, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u0432\u044b\u0445\u043e\u0434\u043e\u043c \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u044b \u0431\u0443\u0444\u0435\u0440\u0430 \u0432 \u043f\u0430\u043c\u044f\u0442\u0438, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434",
  "\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": "\u0427\u0442\u0435\u043d\u0438\u0435 \u0438\u0437 \u043f\u0430\u043c\u044f\u0442\u0438, \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0439 \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u0435\u0439 \u043e\u043a\u043e\u043d\u0447\u0430\u043d\u0438\u044f \u0431\u0443\u0444\u0435\u0440\u0430 (CWE-126)",
  "\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 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Microsoft .NET, Microsoft .NET Framework \u0438 \u0440\u0435\u0434\u0430\u043a\u0442\u043e\u0440\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 Visual Studio \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u0432\u044b\u0445\u043e\u0434\u043e\u043c \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u044b \u0431\u0443\u0444\u0435\u0440\u0430 \u0432 \u043f\u0430\u043c\u044f\u0442\u0438. \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\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434",
  "\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": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176\nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/",
  "\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\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c, \u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-126",
  "\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": "\u041a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\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 10)\n\u0412\u044b\u0441\u043e\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 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 8,8)"
}

bit-dotnet-2025-36855

Vulnerability from bitnami_vulndb

Published

2026-09-18 08:39

Modified

2026-09-18 09:06

Summary

EOL .NET 6.0 Runtime Remote Code Execution Vulnerability

Details

A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll due to buffer over-read.

Per CWE-126: Buffer Over-read https://cwe.mitre.org/data/definitions/126.html , Buffer Over-read is when a product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

This issue affects EOL ASP.NET 6.0.0 <= 6.0.36 as represented in this CVE, as well as 8.0.0 <= 8.0.11 & <= 9.0.0 as represented in CVE-2025-21176.

Additionally, if you've deployed self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

NOTE: This CVE affects only End Of Life (EOL) software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "dotnet",
        "purl": "pkg:bitnami/dotnet"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.0.36"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-36855"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll\u00a0due to buffer over-read.\n\n Per  CWE-126: Buffer Over-read https://cwe.mitre.org/data/definitions/126.html , Buffer Over-read is when a product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.\n\n  This issue affects EOL ASP.NET 6.0.0 \u003c= 6.0.36 as represented in this CVE, as well as 8.0.0 \u003c= 8.0.11 \u0026 \u003c= 9.0.0 as represented in\u00a0CVE-2025-21176.\n\n \n\n Additionally, if you\u0027ve deployed  self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd \u00a0targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n NOTE:\u00a0This CVE affects only End Of Life (EOL)\u00a0software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.",
  "id": "BIT-dotnet-2025-36855",
  "modified": "2026-09-18T09:06:02.240Z",
  "published": "2026-09-18T08:39:46.983Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-36855"
    },
    {
      "type": "WEB",
      "url": "https://www.herodevs.com/vulnerability-directory/cve-2025-21176"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "EOL .NET 6.0 Runtime Remote Code Execution Vulnerability"
}

FKIE_CVE-2025-36855

Vulnerability from fkie_nvd - Published: 2025-09-08 14:15 - Updated: 2026-06-17 09:14

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	36c7be3b-2937-45df-85ea-ca7133ea542c	https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176
	36c7be3b-2937-45df-85ea-ca7133ea542c	https://www.herodevs.com/vulnerability-directory/cve-2025-21176

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "platforms": [
            "Unknown"
          ],
          "product": ".NET 6.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "6.0.36",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "36c7be3b-2937-45df-85ea-ca7133ea542c"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll\u00a0due to buffer over-read.\n\n Per  CWE-126: Buffer Over-read https://cwe.mitre.org/data/definitions/126.html , Buffer Over-read is when a product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.\n\n  This issue affects EOL ASP.NET 6.0.0 \u003c= 6.0.36 as represented in this CVE, as well as 8.0.0 \u003c= 8.0.11 \u0026 \u003c= 9.0.0 as represented in\u00a0CVE-2025-21176.\n\n \n\n Additionally, if you\u0027ve deployed  self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd \u00a0targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n NOTE:\u00a0This CVE affects only End Of Life (EOL)\u00a0software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry."
    }
  ],
  "id": "CVE-2025-36855",
  "lastModified": "2026-06-17T09:14:55.923",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "36c7be3b-2937-45df-85ea-ca7133ea542c",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-36855",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-09-08T14:06:12.291326Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-09-08T14:15:34.577",
  "references": [
    {
      "source": "36c7be3b-2937-45df-85ea-ca7133ea542c",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176"
    },
    {
      "source": "36c7be3b-2937-45df-85ea-ca7133ea542c",
      "url": "https://www.herodevs.com/vulnerability-directory/cve-2025-21176"
    }
  ],
  "sourceIdentifier": "36c7be3b-2937-45df-85ea-ca7133ea542c",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-126"
        }
      ],
      "source": "36c7be3b-2937-45df-85ea-ca7133ea542c",
      "type": "Secondary"
    }
  ]
}

GHSA-642H-GGVV-J2C4

Vulnerability from github – Published: 2025-09-08 15:37 – Updated: 2025-09-08 15:37

Details

A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll due to buffer over-read.

This issue affects EOL ASP.NET 6.0.0 <= 6.0.36 as represented in this CVE, as well as 8.0.0 <= 8.0.11 & <= 9.0.0 as represented in CVE-2025-21176.

NOTE: This CVE affects only End Of Life (EOL) software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.

Severity

8.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-36855"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-126"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-08T14:15:34Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll\u00a0due to buffer over-read.\n\n Per  CWE-126: Buffer Over-read https://cwe.mitre.org/data/definitions/126.html , Buffer Over-read is when a product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.\n\n  This issue affects EOL ASP.NET 6.0.0 \u003c= 6.0.36 as represented in this CVE, as well as 8.0.0 \u003c= 8.0.11 \u0026 \u003c= 9.0.0 as represented in\u00a0CVE-2025-21176.\n\n \n\n Additionally, if you\u0027ve deployed  self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd \u00a0targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n NOTE:\u00a0This CVE affects only End Of Life (EOL)\u00a0software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.",
  "id": "GHSA-642h-ggvv-j2c4",
  "modified": "2025-09-08T15:37:44Z",
  "published": "2025-09-08T15:37:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-36855"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176"
    },
    {
      "type": "WEB",
      "url": "https://www.herodevs.com/vulnerability-directory/cve-2025-21176"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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.

Action not permitted

CVE-2025-36855 (GCVE-0-2025-36855)

BDU:2025-12584 (CVE-2025-36855)

bit-dotnet-2025-36855

Vulnerability from bitnami_vulndb

FKIE_CVE-2025-36855

GHSA-642H-GGVV-J2C4

Tags

Sightings

Nomenclature

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