{"cvss":0.0,"datePublished":"2026-03-18","dateUpdated":"2026-03-18","description":"Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.","dueDate":"2026-03-21","id":"CVE-2026-20963","kev_catalogs":["cisa"],"knownRansomwareCampaignUse":"Unknown","notes":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963 ; https://nvd.nist.gov/vuln/detail/CVE-2026-20963","product":"SharePoint","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","severity":"HIGH","source":"cisa_known_exploited","title":"Microsoft SharePoint Deserialization of Untrusted Data Vulnerability","vendor":"Microsoft"}