Main Vulnerability Database Vulnerabilities #VU137558

Improper access control in Microsoft Windows and Windows Server - CVE-2026-50465

Published: July 15, 2026

Vulnerability identifier: #VU137558

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-50465

CWE-ID: CWE-284

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in Windows DNS Client. A local user can bypass implemented security restrictions and perform tampering attack.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2026-50465

Install updates from vendor's website.

Microsoft Windows - addressed in versions 11 24H2 10.0.26100.8875, 11 25H2 10.0.26200.8875, 11 26H1 10.0.28000.2269, 11 26H1 10.0.28000.2525
Windows Server - addressed in versions 2012 R2 6.3.9600.23291, 2025 10.0.26100.33158

External References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50465

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