CVE-2021-1726: Microsoft SharePoint Enterprise Server

High severity, CVSS 8.0. EPSS: 2.1% 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 2010 only; version 2013 only
• Microsoft SharePoint Server: version 2019 only
• Microsoft Windows 10: affected versions not specified; version 20h2 only; version 1607 only; version 1803 only; version 1809 only; version 1909 only; …
• Microsoft Windows 7: affected versions not specified
• Microsoft Windows 8.1: affected versions not specified
• Microsoft Windows Rt 8.1: affected versions not specified
• Microsoft Windows Server 2008: affected versions not specified; version r2 only
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: affected versions not specified; version 20h2 only; version 1909 only; version 2004 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2021-02-25. Last modified 2026-06-17.