CVE-2021-28450: Microsoft SharePoint Foundation

Medium severity, CVSS 5.0. EPSS: 2.4% chance of exploitation in the next 30 days.

Microsoft SharePoint Denial of Service Vulnerability

Affected products

• Microsoft SharePoint Foundation: version 2010 only
• Microsoft SharePoint Server: version 2013 only; version 2016 only; version 2019 only

Published 2021-04-13. Last modified 2026-06-17.