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CVE-2026-50387ImportantMonitor

Windows GDI Elevation of Privilege Vulnerability

Severity Important  ·  Urgency Monitor

Why it matters: Important severity (CVSS 7.8)

Elevation of Privilege · Important · CVSS 7.8. Affects: Windows 10 Version, Windows Server, Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems, Windows 10 Version 22H2 for x64-based Systems.

CVSS 7.8EPSS 1.9%Security update published 2026-08-21Applies to On-premisesKB5099538NVD

Affected: Windows 10 Version, Windows Server, Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems, Windows 10 Version 22H2 for x64-based Systems

View at Microsoft →