Protection mechanism failure in Windows and Windows Server - CVE-2026-50661
Published: July 17, 2026
Vulnerability identifier: #VU138089
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-50661
CWE-ID: CWE-693
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows an attacker with physical access to bypass a security feature.
The vulnerability exists due to protection mechanism failure in Windows BitLocker when accessing the system storage device with physical access. An attacker with physical access can perform a physical attack to bypass a security feature.
Successful exploitation could allow access to encrypted data on the system storage device.
How to mitigate CVE-2026-50661
Install security update from vendor's website.