{"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_use":"Unknown","short_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.","cwes":"CWE-502","cvss_version":"3.1","cvss_severity":"CRITICAL","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","nvd_published":"2026-01-13","nvd_status":"Analyzed","epss":0.32613,"epss_percentile":0.98266,"cvss_score":9.8,"days_published_to_kev":64,"source":"https://data.cybermax-tools.workers.dev/cve/CVE-2026-20963","by":"CyberMax"}