SB20260415144 - Security feature bypass in Microsoft Windows BitLocker
Published: April 15, 2026
Security Bulletin ID
SB20260415144
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2026-27913)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to compromise the target system.
The vulnerability exists due to insufficient validation of user-supplied input in Windows BitLocker. A local attacker can bypass Secure Boot.
Remediation
Install update from vendor's website.