Main Vulnerability Database Vulnerabilities #VU134316

Improper access control in Windows and Windows Server - CVE-2026-45654

Published: June 11, 2026

Vulnerability identifier: #VU134316

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2026-45654

CWE-ID: CWE-284

Exploitation vector: Local access

Exploit availability: No public exploit available

Vendor: Microsoft

Affected software:
Windows
Windows Server

Detailed vulnerability description

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

The vulnerability exists due to insufficient implementation of security measures in Secure Boot. A local administrator can bypass Secure Boot.

Install updates from vendor's website.