CVE-2026-58644

No fix known ExploitedEPSS 16%CVSS 9.8

Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

Published 2026-07-14 · In CISA KEV since 2026-07-16 · CVE record · OSV

Products: Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition