Main Vulnerability Database Vulnerabilities #VU137869

Use-after-free in Windows and Windows Server - CVE-2026-50459

Published: July 16, 2026

Vulnerability identifier: #VU137869

CSH Severity: Low

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

CVE-ID: CVE-2026-50459

CWE-ID: CWE-416

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Microsoft

Affected software:
Windows
Windows Server

Detailed vulnerability description

The vulnerability allows a local attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Kernel. A local attacker can gain elevated privileges on the target system.

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