{"id":"CVE-2026-27912","aliases":["EUVD-2026-22453","GHSA-hm2p-4g74-cx7c"],"status":"published","title":"Windows Kerberos Elevation of Privilege Vulnerability","description":"Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.","severity":{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00561,"percentile":0.47034,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-285"],"published":"2026-04-14T16:58:07Z","modified":"2026-10-26T21:10:00Z","exploits":[{"source":"pocgithub","id":"Semperis-Community/ResetNightmare","title":"Semperis-Community/ResetNightmare","date":"2026-08-02","url":"https://github.com/Semperis-Community/ResetNightmare"},{"source":"pocgithub","id":"mihat2/ResetNightmare-impacket","title":"mihat2/ResetNightmare-impacket","date":"2026-08-08","url":"https://github.com/mihat2/ResetNightmare-impacket"},{"source":"pocgithub","id":"oxstussz-eng/Kerberos-CVE-2026-27912","title":"oxstussz-eng/Kerberos-CVE-2026-27912","date":"2026-08-14","url":"https://github.com/oxstussz-eng/Kerberos-CVE-2026-27912"}],"products":[{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2022, 23h2 edition (server core installation)"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2022_23h2"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27912","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27912"},{"url":"https://github.com/advisories/GHSA-hm2p-4g74-cx7c"}],"sources":{"cve":[{"id":"CVE-2026-27912","title":"Windows Kerberos Elevation of Privilege Vulnerability","description":"Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.","status":"published","published":"2026-04-14T16:58:07.073Z","modified":"2026-10-15T15:53:16.657Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:19:48.826324Z"}],"euvd":[{"id":"EUVD-2026-22453","description":"Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.","status":"published","published":"2026-04-14T16:58:07Z","modified":"2026-10-15T15:53:16Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T17:00:12.978606Z"}],"ghsa":[{"id":"GHSA-hm2p-4g74-cx7c","title":"Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges...","description":"Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.","status":"published","published":"2026-04-14T18:30:38Z","modified":"2026-04-14T18:30:50Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T15:07:29.526942Z"}],"nvd":[{"id":"CVE-2026-27912","description":"Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.","status":"published","published":"2026-04-14T18:16:58.6Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:12:14.748836Z"}]}}