{"id":"CVE-2026-45654","aliases":["EUVD-2026-35570","GHSA-26mx-r4q8-6qp7"],"status":"published","title":"Secure Boot Security Feature Bypass Vulnerability","description":"Improper access control in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.","severity":{"version":"3.1","score":7.9,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00309,"percentile":0.23922,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2026-06-09T17:05:43Z","modified":"2026-11-10T23:24:33Z","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-2026-45654","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45654"},{"url":"https://github.com/advisories/GHSA-26mx-r4q8-6qp7"}],"sources":{"cve":[{"id":"CVE-2026-45654","title":"Secure Boot Security Feature Bypass Vulnerability","description":"Improper access control in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-06-09T17:05:43.972Z","modified":"2026-11-10T23:24:33.678Z","cvss":[{"version":"3.1","score":7.9,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-11T00:50:10.062046Z"}],"euvd":[{"id":"EUVD-2026-35570","description":"Improper access control in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-06-09T17:05:43Z","modified":"2026-11-10T23:24:33Z","cvss":[{"version":"3.1","score":7.9,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-11T00:24:45.332412Z"}],"ghsa":[{"id":"GHSA-26mx-r4q8-6qp7","title":"Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a...","description":"Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-06-09T18:30:53Z","modified":"2026-06-09T18:30:59Z","cvss":[{"version":"3.1","score":7.9,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:08:42.112356Z"}],"nvd":[{"id":"CVE-2026-45654","description":"Improper access control in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-06-09T17:17:32.46Z","modified":"2026-07-23T08:10:00.137Z","cvss":[{"version":"3.1","score":7.9,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:12:23.109705Z"}]}}