SB20260414139 - Use of uninitialized resource in Microsoft Windows Boot Manager
Published: April 14, 2026
Security Bulletin ID
SB20260414139
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of uninitialized resource (CVE-ID: CVE-2026-26175)
CWE-ID: CWE-908 - Use of Uninitialized Resource
CVSSv4: 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:Clear
The vulnerability allows a local attacker to bypass certain security restrictions.
The vulnerability exists due to usage of uninitialized resources in Windows Boot Manager. An attacker with physical access can pass specially crafted data to the application, trigger uninitialized usage of resources and gain access to sensitive information on the system.
Remediation
Install update from vendor's website.