CVE-2026-45654

HIGH

Microsoft Windows 11 Version 24H2 - Secure Boot Security Feature Bypass Vulnerability

Title source: rule
STIX 2.1

Description

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

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Secure Boot Security Feature Bypass Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45654

Scores

CVSS v3 7.9
EPSS 0.0025
EPSS Percentile 15.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-284
Status published
Products (10)
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 1.0.0 - 10.0.28000.2269
Microsoft/Windows 11 version 26H1 10.0.28000.0 - 10.0.28000.2269
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
microsoft/windows_11_24h2 < 10.0.26100.8655 (2 CPE variants)
microsoft/windows_11_25h2 < 10.0.26200.8655 (2 CPE variants)
microsoft/windows_11_26h1 < 10.0.28000.2269 (2 CPE variants)
microsoft/windows_server_2025 < 10.0.26100.32995
Published Jun 09, 2026
Tracked Since Jun 09, 2026