CVE-2026-45588

Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

• microsoft windows 10 1607 (< 10.0.14393.9234) • microsoft windows 10 1809 (< 10.0.17763.8880) • microsoft windows 10 21h2 (< 10.0.19044.7417) • microsoft windows 10 22h2 (< 10.0.19045.7417) • microsoft windows 11 23h2 (< 10.0.22631.7219) • microsoft windows 11 24h2 (< 10.0.26100.8655) • microsoft windows 11 25h2 (< 10.0.26200.8655) • microsoft windows 11 26h1 (< 10.0.28000.2269) • microsoft windows server 2012 • microsoft windows server 2012 r2 • microsoft windows server 2016 (< 10.0.14393.9234) • microsoft windows server 2019 (< 10.0.17763.8880) • microsoft windows server 2022 (< 10.0.20348.5256) • microsoft windows server 2025 (< 10.0.26100.32995)