Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.
Fix
Public exploits 3
- Semperis-Community/ResetNightmare PoC on GitHub
- mihat2/ResetNightmare-impacket PoC on GitHub
- oxstussz-eng/Kerberos-CVE-2026-27912 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 1
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.0 · microsoftNVD modified 2026-10-26 21:10
Affected (CPE criteria) 7
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*