CVE-2021-1716: Microsoft 365 Apps

High severity, CVSS 7.8. EPSS: 3.9% chance of exploitation in the next 30 days.

Microsoft Word Remote Code Execution Vulnerability

Affected products

• Microsoft 365 Apps: affected versions not specified
• Microsoft Office: version 2010 only; version 2019 only
• Microsoft Office Online Server: affected versions not specified
• Microsoft Office Web Apps: version 2010 only
• Microsoft Office Web Apps Server: version 2013 only
• Microsoft SharePoint Enterprise Server: version 2013 only; version 2016 only
• Microsoft SharePoint Server: version 2010 only; version 2019 only
• Microsoft Word: version 2010 only; version 2013 only; version 2016 only

Published 2021-01-12. Last modified 2026-06-17.