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CVE-2026-21530ImportantMonitor

Windows Rich Text Edit Elevation of Privilege Vulnerability

Severity Important  ·  Urgency Monitor

Why it matters: Important severity (CVSS 6.7)

Elevation of Privilege · Important · CVSS 6.7. 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 6.7EPSS 0.3%Update published 2026-06-23Source updated 2026-06-23KB5087538NVD

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

Change history

2026-06-23 · First seen

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