CVE-2020-1321: Microsoft 365 Apps

High severity, CVSS 8.8. EPSS: 11.6% chance of exploitation in the next 30 days.

A remote code execution vulnerability exists in Microsoft Office software when it fails to properly handle objects in memory, aka 'Microsoft Office Remote Code Execution Vulnerability'.

Affected products

• Microsoft 365 Apps: affected versions not specified
• Microsoft Office: version 2016 only; version 2019 only

Published 2020-06-09. Last modified 2026-06-17.