CVE Catalog
CVE-2026-66808
HighCVSS 8.8Exploitation Probability (EPSS)
Elevated risk1.58%
73th percentile - higher than 73% of all known CVEs
Summary
A deserialization of untrusted data vulnerability in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Risk Assessment
An authorized attacker could remotely execute code on the SharePoint server, potentially leading to service takeover.
Recommendation
Apply security patches provided by Microsoft for SharePoint.
Original NVD description (English source)
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.