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CVE-2026-77898CriticalMonitor

Microsoft Office Remote Code Execution Vulnerability

Severity Critical  ·  Urgency Monitor

Why it matters: Critical severity (CVSS 7.5)

Remote Code Execution · Critical · CVSS 7.5. Affects: Microsoft Office LTSC, Microsoft Office, Microsoft 365 Apps, Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac.

CVSS 7.5Security update published 2026-09-08Applies to Cloud + on-premisesNVD

Affected: Microsoft Office LTSC, Microsoft Office, Microsoft 365 Apps, Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac

Related changes

Change history

2026-09-08 · First captured by tracker

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