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Critical severity9.8CISA KEVNVD Advisory· Published Jan 13, 2026· Updated Apr 1, 2026

CVE-2026-20963

CVE-2026-20963

Description

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

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

4

Microsoft/Sharepoint Server4 versions
cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*+ 3 more
- cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
- cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*range: <16.0.19127.20442
- (no CPE)

Patches

Vulnerability mechanics

References

2

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963nvdVendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource

News mentions

0

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