Incorrect Implementation of Authentication Algorithm in Windows Server - CVE-2025-21311
Published: January 15, 2025
Vulnerability identifier: #VU102778
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-21311
CWE-ID: CWE-303
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to escalate privileges.
The vulnerability exists due to incorrect implementation of authentication algorithm in Windows NTLM V1. A remote attacker can gain elevated privileges on the target system.
Affected software
Windows Server
How to mitigate CVE-2025-21311
Install updates from vendor's website.
Windows Server - addressed in versions 2016 10.0.14393.7699, 2022 23H2 10.0.25398.1369, 2025 10.0.26100.2894