CVE-2026-20963 - Microsoft SharePoint
AI Vulnerability ContextDeserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
Overview
A source-backed snapshot of this vulnerability.
CISA KEVyesWhether CISA lists this as exploited.
Techniques0AI attack methods connected to this vulnerability.
Case studies0Examples where this vulnerability is mentioned.
Vulnerability status
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CISA KEVCRITICAL
- CVE ID
- CVE-2026-20963
- Vendor/project
- Microsoft
- Product
- SharePoint
- Vulnerability name
- Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
- Date added
- 2026-03-18
- Due date
- 2026-03-21
- Known ransomware campaign use
- Unknown
- CVSS v3
- 9.8
CWE-502
Exploit context
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No description available. The source record only contains identifiers and metadata.
Source evidence
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Original source
Original source links
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NVD CVE pagehttps://nvd.nist.gov/vuln/detail/CVE-2026-20963CVE API docshttps://nvd.nist.gov/developers/vulnerabilitiesData feedshttps://nvd.nist.gov/vuln/data-feedsCataloghttps://www.cisa.gov/known-exploited-vulnerabilities-catalogData repositoryhttps://github.com/cisagov/kev-datasecure@microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20963