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CVE-2026-50517CriticalMonitor

Microsoft M365 Copilot Remote Code Execution Vulnerability

Severity Critical  ·  Urgency Monitor

Why it matters: Critical severity (CVSS 9.9)

Remote Code Execution · Critical · CVSS 9.9. Affects: Microsoft 365 Copilot.

CVSS 9.9EPSS 1.3%Security update published 2026-08-21NVD

Affected: Microsoft 365 Copilot

Related changes

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