CVE-2021-28452: Microsoft 365 Apps

High severity, CVSS 7.1. EPSS: 1.3% chance of exploitation in the next 30 days.

Microsoft Outlook Memory Corruption Vulnerability

Affected products

• Microsoft 365 Apps: affected versions not specified
• Microsoft Office: version 2019 only
• Microsoft Outlook: version 2010 only; version 2013 only; version 2016 only

Published 2021-04-13. Last modified 2026-06-17.