CVE-2020-1523: Microsoft SharePoint Server

High severity, CVSS 8.9. EPSS: 2.2% chance of exploitation in the next 30 days.

<p>A tampering vulnerability exists when Microsoft SharePoint Server fails to properly handle profile data. An attacker who successfully exploited this vulnerability could modify a targeted user's profile data.</p> <p>To exploit the vulnerability, an attacker would need to be authenticated on an affected SharePoint Server. The attacker would then need to send a specially modified request to the server, targeting a specific user.</p> <p>The security update addresses the vulnerability by modifying how Microsoft SharePoint Server handles profile data.</p>

Affected products

• Microsoft SharePoint Server: version 2019 only

Published 2020-09-11. Last modified 2026-06-17.