Protection Mechanism Failure in Microsoft Windows and Windows Server - CVE-2025-26637

Vulnerability identifier: #VU107303

CSH Severity: Low

CVSS v4: 7 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-26637

CWE-ID: CWE-693

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in BitLocker. An attacker with physical access can bypass the BitLocker Device Encryption feature on the system storage device.

Microsoft Windows
Windows Server

Install updates from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.5737, 10 22H2 10.0.19045.5737, 10 1607 10.0.14393.7970, 10 1809 10.0.17763.7137, 11 22H2 10.0.22621.5191, 11 23H2 10.0.22631.5191, 11 24H2 10.0.26100.3775
Windows Server - addressed in versions 2012 R2 6.3.9600.22523, 2016 10.0.14393.7970, 2019 10.0.17763.7137, 2022 23H2 10.0.25398.1551, 2022 10.0.20348.3454, 2025 10.0.26100.3775

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26637

• Protection Mechanism Failure in Microsoft BitLocker