Description
Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – < 10.0.22621.6060 | 10.0.22621.6060 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – < 10.0.22631.6060 | 10.0.22631.6060 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – < 10.0.22631.6060 | 10.0.22631.6060 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.6899 | 10.0.26100.6899 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – < 10.0.26200.6899 | 10.0.26200.6899 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.6899 | 10.0.26100.6899 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.6899 | 10.0.26100.6899 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
lytnc/CVE-2025-59284-PoC ★ 5 · Mar 13, 2026
Proof of concept for CVE-2025-59284 libarchive exploit
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- WID-SEC-2025-2307 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 25, 2025
- NCSC-2025-0310 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Oct 24, 2025
- MSRC-CVE-2025-59284 Windows NTLM Spoofing Vulnerability Microsoft Security Response Center · Oct 14, 2025
References
- Windows NTLM Spoofing Vulnerability vendor-advisory patch