{"id":"CVE-2025-26647","published":"2025-04-08T17:23:49Z","modified":"2026-08-10T15:12:44Z","title":"Windows Kerberos Elevation of Privilege Vulnerability","vendor":"Microsoft","product":"Windows Server 2008 R2 Service Pack 1","tier":"tail","description":{"text":"Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network.","provenance":"source","from":"CVE.org"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","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","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.02255,"percentile":0.8288,"provenance":"source"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26647","tags":["vendor-advisory","patch"]}],"priority":{"score":22.7,"factors":[{"name":"EPSS percentile","points":16.58},{"name":"CVSS severity","points":6.16}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Windows Server 2008 R2 Service Pack 1","versions":[">= 6.1.7601.0, < 6.1.7601.27670"]},{"vendor":"Microsoft","product":"Windows Server 2008 R2 Service Pack 1 (Server Core installation)","versions":[">= 6.1.7601.0, < 6.1.7601.27670"]},{"vendor":"Microsoft","product":"Windows Server 2008 Service Pack 2","versions":[">= 6.0.6003.0, < 6.0.6003.23220"]},{"vendor":"Microsoft","product":"Windows Server 2008 Service Pack 2 (Server Core installation)","versions":[">= 6.0.6003.0, < 6.0.6003.23220"]},{"vendor":"Microsoft","product":"Windows Server 2012","versions":[">= 6.2.9200.0, < 6.2.9200.25423"]},{"vendor":"Microsoft","product":"Windows Server 2012 (Server Core installation)","versions":[">= 6.2.9200.0, < 6.2.9200.25423"]},{"vendor":"Microsoft","product":"Windows Server 2012 R2","versions":[">= 6.3.9600.0, < 6.3.9600.22523"]},{"vendor":"Microsoft","product":"Windows Server 2012 R2 (Server Core installation)","versions":[">= 6.3.9600.0, < 6.3.9600.22523"]},{"vendor":"Microsoft","product":"Windows Server 2016","versions":[">= 10.0.14393.0, < 10.0.14393.7969"]},{"vendor":"Microsoft","product":"Windows Server 2016 (Server Core installation)","versions":[">= 10.0.14393.0, < 10.0.14393.7969"]}],"euvd":{"id":"EUVD-2025-10222","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-windows-cwe-20"}}