{"id":"CVE-2025-26647","aliases":["EUVD-2025-10222","GHSA-c4pv-p44r-9xfc"],"status":"published","title":"Windows Kerberos Elevation of Privilege Vulnerability","description":"Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/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":0.023,"percentile":0.83447,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2025-04-08T17:23:49Z","modified":"2026-08-10T15:12:44Z","products":[{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1 (server core installation)"},{"vendor":"microsoft","product":"windows server 2008 service pack 2"},{"vendor":"microsoft","product":"windows server 2008 service pack 2 (server core installation)"},{"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_2008"},{"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-2025-26647","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-26647"},{"url":"https://github.com/advisories/GHSA-c4pv-p44r-9xfc"}],"sources":{"cve":[{"id":"CVE-2025-26647","title":"Windows Kerberos Elevation of Privilege Vulnerability","description":"Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2025-04-08T17:23:49.183Z","modified":"2026-08-10T15:12:44.409Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/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-20"],"updated_at":"2026-11-02T14:32:27.932735Z"}],"euvd":[{"id":"EUVD-2025-10222","description":"Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2025-04-08T17:23:49Z","modified":"2026-08-10T15:12:44Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:02:02.865075Z"}],"ghsa":[{"id":"GHSA-c4pv-p44r-9xfc","title":"Improper input validation in Windows Kerberos allows an unauthorized attacker to elevate...","description":"Improper input validation in Windows Kerberos allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2025-04-08T18:34:46Z","modified":"2025-04-08T18:34:54Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:00:51.102649Z"}],"nvd":[{"id":"CVE-2025-26647","description":"Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2025-04-08T18:15:48.51Z","modified":"2026-06-17T09:02:12.007Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:10:59.48027Z"}]}}