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Unrated severityNVD Advisory· Published Sep 9, 2025· Updated Feb 20, 2026

HTTP.sys Denial of Service Vulnerability

CVE-2025-53805

Description

Out-of-bounds read in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.

Affected products

9
  • Microsoft/Internet Information Servicesllm-fuzzy
  • Microsoft/Windows 11 version 22H2v5
    Range: 10.0.22621.0
  • Microsoft/Windows 11 version 22H3v5
    Range: 10.0.22631.0
  • Microsoft/Windows 11 Version 23H2v5
    Range: 10.0.22631.0
  • Microsoft/Windows 11 Version 24H2v5
    Range: 10.0.26100.0
  • Microsoft/Windows Server 2022v5
    Range: 10.0.20348.0
  • Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation)v5
    Range: 10.0.25398.0
  • Microsoft/Windows Server 2025v5
    Range: 10.0.26100.0
  • Microsoft/Windows Server 2025 (Server Core installation)v5
    Range: 10.0.26100.0

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

1

News mentions

0

No linked articles in our index yet.