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Public proof of conceptFix available

CVE-2025-54918

A public proof of concept exists; no exploitation attested.

  • Published2025-09-09
  • WeaknessCWE-287

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC
  1. 2025-09-0917:16CVE publishedNVD

Versions per branch

NVD
Microsoft windows server 2008
BranchAffectedFixed in
—all versionsno fix published
—= r2no fix published
Microsoft windows server 2012
BranchAffectedFixed in
—all versionsno fix published
—= r2no fix published
Microsoft windows 10 1507
BranchAffectedFixed in
10.0< 10.0.10240.2112810.0.10240.21128

12 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA25 products

As microsoft, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Microsoft Windows 10 Version 1507

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 10.0.10240.0, < 10.0.10240.21128fixed in 10.0.10240.21128custom
  • Microsoft Windows 10 Version 1607

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 10.0.14393.0, < 10.0.14393.8422fixed in 10.0.14393.8422custom
  • Microsoft Windows 10 Version 1809

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 10.0.17763.0, < 10.0.17763.7792fixed in 10.0.17763.7792custom
  • Microsoft Windows 10 Version 21H2

    platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems

    Affected
    • ≥ 10.0.19044.0, < 10.0.19044.6332fixed in 10.0.19044.6332custom
  • Microsoft Windows 10 Version 22H2

    platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems

    Affected
    • ≥ 10.0.19045.0, < 10.0.19045.6332fixed in 10.0.19045.6332custom
  • Microsoft Windows 11 version 22H2

    platforms: ARM64-based Systems, x64-based Systems

    Affected
    • ≥ 10.0.22621.0, < 10.0.22621.5909fixed in 10.0.22621.5909custom

19 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-02-20

Fix

Advisories and patches

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2025-09-09
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-75v4-rj2v-3f53

Frequently asked questions

What is CVE-2025-54918?

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

Is CVE-2025-54918 actively exploited?

Active exploitation of CVE-2025-54918 has not been confirmed. Its EPSS score was 25.3% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-54918?

CVE-2025-54918 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record