M365 Change Tracker

← All changes · security · CVE-2026-88153

CVE-2026-88153ImportantMonitor

Microsoft Office Excel Information Disclosure Vulnerability

Severity Important  ·  Urgency Monitor

Why it matters: Important severity (CVSS 6.5)

Information Disclosure · Important · CVSS 6.5. Affects: Microsoft 365 Apps, Microsoft Office LTSC.

CVSS 6.5EPSS 0.8%Security update published 2026-11-10Applies to Cloud + on-premisesNVD

Affected: Microsoft 365 Apps, Microsoft Office LTSC

Related changes

Change history

2026-10-13 · First captured by tracker

View at Microsoft →