CVE-2026-88190ImportantMonitor
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.
Affected: Microsoft 365 Apps, Microsoft Office LTSC
Related changes
Change history
2026-10-13 · First captured by tracker