M365 Change Tracker

← All changes · security · CVE-2026-70327

CVE-2026-70327ImportantMonitor

Microsoft Excel Information Disclosure Vulnerability

Severity Important  ·  Urgency Monitor

Why it matters: Important severity (CVSS 6.5)

Information Disclosure · Important · CVSS 6.5. Affects: Microsoft Office 365 for Mac, Office Online Server, Microsoft Office, Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office LTSC.

CVSS 6.5EPSS 0.9%Security update published 2026-08-23Applies to Cloud + on-premisesKB5002884NVD

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

Related changes

View at Microsoft →