Main Vulnerability Database Vulnerabilities #VU138059

Untrusted Pointer Dereference in Microsoft Windows and Windows Server - CVE-2026-50479

Published: July 17, 2026

Vulnerability identifier: #VU138059

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-50479

CWE-ID: CWE-822

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to untrusted pointer dereference in Windows USB Hub Driver when handling local operations. A local user can trigger the vulnerable driver behavior to escalate privileges.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2026-50479

Install security update from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7548, 10 22H2 10.0.19045.7548, 10 1809 10.0.17763.9020, 11 26H1 10.0.28000.2525
Windows Server - addressed in versions 2012 R2 6.3.9600.23291, 2019 10.0.17763.9020, 2022 10.0.20348.5386, 2025 10.0.26100.33158

External References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-50479

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