CVE-2026-83499

Description

Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.

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Produits concernés

• Microsoft Windows 10 Version 1607
• Microsoft Windows 10 Version 1809
• Microsoft Windows Server 2012
• Microsoft Windows Server 2012 (Server Core installation)
• Microsoft Windows Server 2012 R2
• Microsoft Windows Server 2012 R2 (Server Core installation)
• Microsoft Windows Server 2016
• Microsoft Windows Server 2016 (Server Core installation)
• Microsoft Windows Server 2019
• Microsoft Windows Server 2019 (Server Core installation)
• Microsoft Windows Server 2022
• Microsoft Windows Server 2025
• Microsoft Windows Server 2025 (Server Core installation)

Scores CVSS

Faiblesses (CWE)

• CWE-1220

Références

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83499

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories