CVE ID
CVE-2026-20963
Vulnerability Name
Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
- Project: Microsoft
- Product: SharePoint
Date
- Date Added: 2026-03-18
- Due Date: 2026-03-21
Description
Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.
Known To Be Used in Ransomware Campaigns?
Unknown
Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Additional Notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963 ; https://nvd.nist.gov/vuln/detail/CVE-2026-20963
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