CVE-2021-34517: Microsoft SharePoint Foundation

Medium severity, CVSS 5.3. EPSS: 2% chance of exploitation in the next 30 days.

Microsoft SharePoint Server Spoofing Vulnerability

Affected products

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

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