{"id":"CVE-2026-45654","published":"2026-06-09T17:05:43Z","modified":"2026-09-24T13:44:35Z","title":"Secure Boot Security Feature Bypass Vulnerability","vendor":"Microsoft","product":"Windows 11 Version 24H2","tier":"tail","description":{"text":"Improper access control in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.9,"severity":"HIGH","version":"3.1","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","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00309,"percentile":0.23616,"provenance":"source"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45654","tags":["vendor-advisory","patch"]}],"priority":{"score":10.3,"factors":[{"name":"EPSS percentile","points":4.72},{"name":"CVSS severity","points":5.53}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Windows 11 Version 24H2","versions":[">= 10.0.26100.0, < 10.0.26100.8655"]},{"vendor":"Microsoft","product":"Windows 11 Version 25H2","versions":[">= 10.0.26200.0, < 10.0.26200.8655"]},{"vendor":"Microsoft","product":"Windows 11 version 26H1","versions":[">= 10.0.28000.0, < 10.0.28000.2269"]},{"vendor":"Microsoft","product":"Windows Server 2025","versions":[">= 10.0.26100.0, < 10.0.26100.32995"]},{"vendor":"Microsoft","product":"Windows Server 2025 (Server Core installation)","versions":[">= 10.0.26100.0, < 10.0.26100.32995"]}],"euvd":{"id":"EUVD-2026-35570","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-windows-cwe-284"}}