CVE-2026-44820ImportantMonitor
Microsoft Excel Remote Code Execution Vulnerability
Severity Important · Urgency Monitor
Why it matters: Important severity (CVSS 7.8)
Remote Code Execution · Important · CVSS 7.8. Affects: Microsoft Office 365 for Mac, Office Online Server, Microsoft Office, Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office LTSC.
Affected: Microsoft Office 365 for Mac, Office Online Server, Microsoft Office, Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office LTSC
Change history
2026-06-23 · First seen