CVE-2026-45588

HighCVSS 7.9/10Last modified Jul 23, 2026

Description

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

Metrics

CVSS 3.1 7.9/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Weakness enumeration

CWE-693

Affected software

Vendor	Product	Versions
Microsoft	Windows 10 Version 1607	>= 10.0.14393.0, < 10.0.14393.9234
Microsoft	Windows 10 Version 1809	>= 10.0.17763.0, < 10.0.17763.8880
Microsoft	Windows 10 Version 21H2	>= 10.0.19044.0, < 10.0.19044.7417
Microsoft	Windows 10 Version 22H2	>= 10.0.19045.0, < 10.0.19045.7417
Microsoft	Windows 11 version 23H2	>= 10.0.22631.0, < 10.0.22631.7219
Microsoft	Windows 11 Version 23H2	>= 10.0.22631.0, < 10.0.22631.7219
Microsoft	Windows 11 Version 24H2	>= 10.0.26100.0, < 10.0.26100.8655
Microsoft	Windows 11 Version 25H2	>= 10.0.26200.0, < 10.0.26200.8655
Microsoft	Windows 11 version 26H1	>= 10.0.28000.0, < 10.0.28000.2269
Microsoft	Windows Server 2012	>= 6.2.9200.0, < 6.2.9200.26132
Microsoft	Windows Server 2012 (Server Core installation)	>= 6.2.9200.0, < 6.2.9200.26132
Microsoft	Windows Server 2012 R2	>= 6.3.9600.0, < 6.3.9600.23228
Microsoft	Windows Server 2012 R2 (Server Core installation)	>= 6.3.9600.0, < 6.3.9600.23228
Microsoft	Windows Server 2016	>= 10.0.14393.0, < 10.0.14393.9234
Microsoft	Windows Server 2016 (Server Core installation)	>= 10.0.14393.0, < 10.0.14393.9234
Microsoft	Windows Server 2019	>= 10.0.17763.0, < 10.0.17763.8880
Microsoft	Windows Server 2019 (Server Core installation)	>= 10.0.17763.0, < 10.0.17763.8880
Microsoft	Windows Server 2022	>= 10.0.20348.0, < 10.0.20348.5256
Microsoft	Windows Server 2025	>= 10.0.26100.0, < 10.0.26100.32995
Microsoft	Windows Server 2025 (Server Core installation)	>= 10.0.26100.0, < 10.0.26100.32995

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45588Vendor Advisory

Timeline

Published: Jun 9, 2026
Last modified: Jul 23, 2026
NVD status: Analyzed

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