HIGH 7.5 Microsoft
CVE-2025-53805
HTTP.sys Denial of Service Vulnerability
Microsoft Security Update 2025-Sep: HTTP.sys Denial of Service Vulnerability
Affected Products
- Windows Server 2022
- Windows Server 2022 (Server Core installation)
- Windows 11 Version 22H2 for ARM64-based Systems
- Windows 11 Version 22H2 for x64-based Systems
- Windows Server 2025 (Server Core installation)
- Windows 11 Version 23H2 for ARM64-based Systems
- Windows 11 Version 23H2 for x64-based Systems
- Windows Server 2022, 23H2 Edition (Server Core installation)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53805
- https://nvd.nist.gov/vuln/detail/CVE-2025-53805
This high severity vulnerability with a CVSS score of 7.5 was published on 2025-09-09 via Microsoft. Affected: Windows Server 2022, Windows Server 2022 (Server Core installation), Windows 11 Version 22H2 for ARM64-based Systems and 5 more.
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