Improper access control in Windows and Windows Server - CVE-2026-32220
Published: April 15, 2026
Vulnerability identifier: #VU126186
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-32220
CWE-ID: CWE-284
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 a local user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in UEFI Secure Boot. A local administrator can bypass the Virtualization-based Security feature.
How to mitigate CVE-2026-32220
Install updates from vendor's website.