CVE-2021-34520: Microsoft SharePoint Foundation

High severity, CVSS 8.1. EPSS: 4.4% chance of exploitation in the next 30 days.

Microsoft SharePoint Server Remote Code Execution Vulnerability

Affected products

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

Published 2021-07-14. Last modified 2026-08-10.