CVE-2025-21311

Windows NTLM V1 Elevation of Privilege Vulnerability
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
microsoftCNA
9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 90%
VendorProductVersion
microsoftwindows_11_24h2
𝑥
< 10.0.26100.2894
microsoftwindows_server_2022_23h2
𝑥
< 10.0.25398.1369
microsoftwindows_server_2025
𝑥
< 10.0.26100.2894
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21311