CVE-2026-48568

Secure Boot Security Feature Bypass Vulnerability

State: Published
Severity: 7.9 High
Published: Jun 9, 2026
Updated: Sep 24, 2026
Reserved: May 21, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.9 High	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	microsoft

Weaknesses

CWE-693 Protection Mechanism Failure

Affected Products

Product	Versions
Windows 10 Version 1607Microsoft	10.0.14393.0 to before 10.0.14393.9234Affected
Windows 10 Version 1809Microsoft	10.0.17763.0 to before 10.0.17763.8880Affected
Windows 10 Version 21H2Microsoft	10.0.19044.0 to before 10.0.19044.7417Affected
Windows 10 Version 22H2Microsoft	10.0.19045.0 to before 10.0.19045.7417Affected
Windows 11 version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.7219Affected
Windows 11 Version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.7219Affected
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.8655Affected
Windows 11 Version 25H2Microsoft	10.0.26200.0 to before 10.0.26200.8655Affected
Windows 11 version 26H1Microsoft	10.0.28000.0 to before 10.0.28000.2269Affected
Windows Server 2012Microsoft	6.2.9200.0 to before 6.2.9200.26132Affected
Windows Server 2012 (Server Core installation)Microsoft	6.2.9200.0 to before 6.2.9200.26132Affected
Windows Server 2012 R2Microsoft	6.3.9600.0 to before 6.3.9600.23228Affected
Windows Server 2012 R2 (Server Core installation)Microsoft	6.3.9600.0 to before 6.3.9600.23228Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.9234Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.9234Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.8880Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.8880Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.5256Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.32995Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.32995Affected

References

Secure Boot Security Feature Bypass Vulnerabilityvendor-advisorypatch

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