CVE-2026-58277: Microsoft SharePoint Server

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

Improper authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

Affected products

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

Published 2026-07-14. Last modified 2026-07-15.