CVE-2023-21716: Microsoft Office

Critical severity, CVSS 9.8. EPSS: 84.8% chance of exploitation in the next 30 days.

Microsoft Word Remote Code Execution Vulnerability

Affected products

• Microsoft Office: version 2019 only
• Microsoft Office Long Term Servicing Channel: version 2021 only
• Microsoft Office Online Server: version 2016 only
• Microsoft Office Web Apps: version 2013 only
• Microsoft SharePoint Enterprise Server: version 2013 only; version 2016 only
• Microsoft SharePoint Foundation: version 2013 only
• Microsoft SharePoint Server: affected versions not specified; version 2019 only
• Microsoft Word: version 2013 only

Published 2023-02-14. Last modified 2026-08-19.