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CVE Number Vulnerability Product Severity Date
CVE-2025-21311 Windows NTLM V1 Elevation of Privilege Vulnerability Windows 11, Windows Server Critical 12-02-2025

Technical Information

“A remote attacker without any prior knowledge of the system, may achieve repeatable success with the payload against the vulnerable component to elevate its privileges on the system via internet.

Patch release date: Jan 14, 2025
Further information on this vulnerability is available at : CVE-2025-21311

Affected Software

Windows Server 2025 (Server Core installation),
Windows Server 2022, 23H2 Edition (Server Core installation),
Windows 11 Version 24H2 for ARM64-based Systems,
Windows 11 Version 24H2 for x64-based Systems,
Windows Server 2025