CVE-2025-54918

Windows NTLM Elevation of Privilege Vulnerability

Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.

Affected

Microsoft · Windows 10 Version 1507 · Windows 10 Version 1607 · Windows 10 Version 1809 · Windows 10 Version 21H2 · Windows 10 Version 22H2 · Windows 11 version 22H2

CVSS v3.1 MICROSOFT

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

25.28% chance of exploitation in the next 30 days, 98th percentile

Published

2025-09-09

Updated

2026-02-20

Proof-of-concept exploits (2)

• mrk336/From-Foothold-to-Domain-Admin-Weaponizing-CVE-2025-54918-in-Real-World-DevOps4★ · 2025-09-17
• Wh0am123/CVE-2025-54918-POC64★ · 2026-01-12

Security advisories

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54918

References

• CVE Record
• NVD entry

Related

• CVE-2021-3456
• CVE-2024-10220
• CVE-2024-3094
• CVE-2025-23266
• CVE-2025-26686
• CVE-2025-27480