M365 Change Tracker

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CVE-2026-105718CriticalMonitor

Microsoft Excel Remote Code Execution Vulnerability

Severity Critical  ·  Urgency Monitor

Why it matters: Critical severity (CVSS 8.8)

Remote Code Execution · Critical · CVSS 8.8. Affects: Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac, Microsoft Office LTSC, Microsoft 365 Apps, Office Online Server.

CVSS 8.8EPSS 1.0%Security update published 2026-11-10Applies to Cloud + on-premisesKB5002928NVD

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

Related changes

Change history

2026-10-13 · First captured by tracker

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