CVE-2025-54918

HIGH

Windows 10 1507-22H2, Windows 11 22H2-24H2, Windows Server 2008 - Privilege Escalation via NTLM Authentication

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2025-54918. PoCs published by Wh0am123, mrk336.

AI-analyzed exploit summary This PoC demonstrates an NTLM relay attack combined with authentication coercion to escalate from a low-privileged domain user to Domain Admin via LDAP manipulation, even with SMB signing enabled. It leverages CVE-2025-54918 to achieve DCSync and full domain compromise.

Description

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

Exploits (2)

nomisec WORKING POC 53 stars
by Wh0am123 · poc
https://github.com/Wh0am123/CVE-2025-54918-POC

This PoC demonstrates an NTLM relay attack combined with authentication coercion to escalate from a low-privileged domain user to Domain Admin via LDAP manipulation, even with SMB signing enabled. It leverages CVE-2025-54918 to achieve DCSync and full domain compromise.

Classification
Working Poc 95%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows Active Directory (2025, 2022)
Auth required
Prerequisites: Valid domain user credentials · Ability to add DNS records in the target AD environment · Network access to the domain controller · Python and required dependencies (impacket-partial-mic, krbrelayx)
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WRITEUP 4 stars
by mrk336 · poc
https://github.com/mrk336/From-Foothold-to-Domain-Admin-Weaponizing-CVE-2025-54918-in-Real-World-DevOps

This repository is a writeup detailing the exploitation and mitigation of CVE-2025-54918, an NTLM authentication bypass vulnerability in Windows. It includes detection scripts, Ansible playbooks for patching, and CI/CD integration examples, but does not contain functional exploit code.

Classification
Writeup 90%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Theoretical
Target: Windows NTLM (New Technology LAN Manager)
Auth required
Prerequisites: Network access to a vulnerable Windows host · Low-level authentication credentials
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 8.8
EPSS 0.1871
EPSS Percentile 96.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-287
Status published
Products (17)
microsoft/windows_10_1507 < 10.0.10240.21128 (2 CPE variants)
microsoft/windows_10_1607 < 10.0.14393.8422 (2 CPE variants)
microsoft/windows_10_1809 < 10.0.17763.7792 (2 CPE variants)
microsoft/windows_10_21h2 < 10.0.19044.6332
microsoft/windows_10_22h2 < 10.0.19045.6332
microsoft/windows_11_22h2 < 10.0.22621.5909
microsoft/windows_11_23h2 < 10.0.22631.5909
microsoft/windows_11_24h2 < 10.0.26100.6508
microsoft/windows_server_2008 (2 CPE variants)
microsoft/windows_server_2008 r2 sp1
... and 7 more
Published Sep 09, 2025
Tracked Since Feb 18, 2026