{"id":"CVE-2026-85921","aliases":["EUVD-2026-77686","GHSA-2q4x-w73p-vjf4"],"status":"published","title":"Windows Secure Kernel Mode Elevation of Privilege Vulnerability","description":"Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00348,"percentile":0.28884,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-415"],"published":"2026-09-14T17:19:07Z","modified":"2026-11-10T21:33:07Z","products":[{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows_11_26h1"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85921","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85921"},{"url":"https://github.com/advisories/GHSA-2q4x-w73p-vjf4"}],"sources":{"cve":[{"id":"CVE-2026-85921","title":"Windows Secure Kernel Mode Elevation of Privilege Vulnerability","description":"Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-14T17:19:07.991Z","modified":"2026-11-10T21:33:07.476Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-415"],"updated_at":"2026-11-10T22:48:54.515847Z"}],"euvd":[{"id":"EUVD-2026-77686","description":"Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-14T17:19:07Z","modified":"2026-11-10T21:33:07Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T22:23:49.679186Z"}],"ghsa":[{"id":"GHSA-2q4x-w73p-vjf4","title":"Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges...","description":"Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-14T18:31:25Z","modified":"2026-09-14T18:31:29Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T15:11:51.662242Z"}],"nvd":[{"id":"CVE-2026-85921","description":"Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-14T18:20:20.047Z","modified":"2026-09-29T19:24:48.28Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:12:46.980627Z"}]}}