CVE-2026-20963
KEVMicrosoft SharePoint Deserialization of Untrusted Data Vulnerability
View CVE record →- Vendor / Project
- Microsoft
- Product
- SharePoint
- Date added
- Mar 18, 2026
- Due date
- Mar 21, 2026
- Known ransomware use
- Unknown
- CWEs
- CWE-502
Description
Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.
Required 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.