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Microsoft Security Response CenterCVE-2026-32224

Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability

Use after free in Windows Server Update Service allows an authorized attacker to elevate privileges locally.

Read the vendor bulletin Get alerts for Windows
7.0CVSS out of 10High severity
Scope

What the vendor says is affected

  • Windows 11 Version 26H1 for ARM64-based Systems
  • Windows 11 version 26H1 for x64-based Systems

Versions the vendor lists as fixed

  • 10.0.28000.1836
Next step

What the vendor recommends

Install KB5083768.

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-32224View CVSS, KEV, EPSS, and threat context
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