CVE-2025-21311CriticalCVSS 9.8

Windows NTLM V1 Elevation of Privilege Vulnerability

Published
January 14, 2025
Last Modified
—

🔗 CVE IDs covered (1)

📋 Description

According to the CVSS metric, the attack vector is network (AV:N) and the attack complexity is low (AC:L). What does that mean for this vulnerability? The attack vector is Network (AV:N) because this vulnerability is remotely exploitable and can be exploited from the internet. The attack complexity is Low (AC:L) because an attacker does not require significant prior knowledge of the system and can achieve repeatable success with the payload against the vulnerable component.

🎯 Affected products5

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

✅ Remediation

KB5050009 (Security Update) — fixed build 10.0.26100.2894 KB5049984 (Security Update) — fixed build 10.0.25398.1369

🔗 References (5)