Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.
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Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2025-09-09. NVD baseline CVSS 8.8; sources differ by 0.0.
Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.
September 9, 2025
October 2, 2025
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
POC for CVE-2025-54918 and a technical demonstration.
Open source ↗Simulated exploitation and mitigation of CVE-2025-54918 (Windows NTLM flaw). Includes detection scripts, Ansible patching, and CI/CD hardening. Demonstrates privilege escalation from low-level access to SYSTEM in hybrid cloud environments.
Open source ↗See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-54918
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.
msrc
CWE-287