CVE-2026-20963 - Microsoft SharePoint Enterprise Server 2016 Plugin
CVE-2026-20963
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
CVE-2026-20963
CVE-2026-20963
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
CVE-2026-20963
Machine-generated threat intelligence
AI Updated 12 days ago
AI enriched 12 days ago (2026-04-09 08:04 UTC)
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Severity is HIGH (CVSS 8.8). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.
Exploitability is assessed as High based on severity and technical exposure profile.
Primary risk drivers: severity and technical exposure profile
Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.
Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.
Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.