CVE-2021-42309: Microsoft SharePoint Enterprise Server

High severity, CVSS 8.8. EPSS: 2.9% chance of exploitation in the next 30 days.

Microsoft SharePoint Server Remote Code Execution Vulnerability

Affected products

• Microsoft SharePoint Enterprise Server: version 2016 only
• Microsoft SharePoint Foundation: version 2013 only
• Microsoft SharePoint Server: affected versions not specified; version 2019 only

Published 2021-12-15. Last modified 2026-06-17.