CVE-2021-40484: Microsoft SharePoint Enterprise Server

High severity, CVSS 7.6. EPSS: 1.4% chance of exploitation in the next 30 days.

Microsoft SharePoint Server Spoofing Vulnerability

Affected products

• Microsoft SharePoint Enterprise Server: version 2016 only
• Microsoft SharePoint Foundation: version 2013 only
• Microsoft SharePoint Server: version 2019 only

Published 2021-10-13. Last modified 2026-06-17.