{"id":"CVE-2026-62766","aliases":["EUVD-2026-56377","GHSA-vwj8-mr8p-vjfq"],"status":"published","title":"Windows Kerberos Elevation of Privilege Vulnerability","description":"Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally.","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/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":0.00264,"percentile":0.18373,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-415"],"published":"2026-08-11T17:04:21Z","modified":"2026-10-30T17:20:10Z","products":[{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62766","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62766"},{"url":"https://github.com/advisories/GHSA-vwj8-mr8p-vjfq"}],"sources":{"cve":[{"id":"CVE-2026-62766","title":"Windows Kerberos Elevation of Privilege Vulnerability","description":"Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-08-11T17:04:21.233Z","modified":"2026-10-30T17:20:10.824Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:20:14.999906Z"}],"euvd":[{"id":"EUVD-2026-56377","description":"Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-08-11T17:04:21Z","modified":"2026-10-30T17:20:10Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T16:59:04.768038Z"}],"ghsa":[{"id":"GHSA-vwj8-mr8p-vjfq","title":"Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally.","description":"Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-08-11T18:31:19Z","modified":"2026-08-11T18:31:24Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T15:10:19.387522Z"}],"nvd":[{"id":"CVE-2026-62766","description":"Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-08-11T17:18:29.027Z","modified":"2026-08-13T15:59:58.327Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}