Improper access control in Windows and Windows Server - CVE-2026-58545
Published: July 16, 2026
Vulnerability identifier: #VU137876
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-58545
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 Windows Kernel. A local user can bypass implemented security restrictions and gain unauthorized access to sensitive information on the system.
How to mitigate CVE-2026-58545
Install updates from vendor's website.