CVE-2019-0558: Microsoft Business Productivity Servers

Medium severity, CVSS 5.4. EPSS: 2% chance of exploitation in the next 30 days.

A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft Office SharePoint XSS Vulnerability." This affects Microsoft SharePoint Server, Microsoft SharePoint, Microsoft Business Productivity Servers. This CVE ID is unique from CVE-2019-0556, CVE-2019-0557.

Affected products

• Microsoft Business Productivity Servers: version 2010 only
• Microsoft SharePoint Server: version 2013 only; version 2016 only; version 2019 only

Published 2019-01-08. Last modified 2026-06-17.