{"@odata.context":"https://api.msrc.microsoft.com/sug/v2.0/sugodata/v2.0/en-US/$metadata#vulnerability/$entity","id":"00000000-0000-0000-0000-0000c88691b9","releaseDate":"2026-01-13T08:00:00-08:00","cveNumber":"CVE-2026-20963","cveTitle":"Microsoft SharePoint Remote Code Execution Vulnerability","releaseNumber":"2026-Jan","vulnType":"Security Vulnerability","latestRevisionDate":"2026-03-17T07:00:00-07:00","description":"<p>Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.</p>\n","cweList":["CWE-502: Deserialization of Untrusted Data"],"cweDetailsListForSearch":["cwe: CWE-502: Deserialization of Untrusted Data","cweUrl: https://cwe.mitre.org/data/definitions/502.html"],"unformattedDescription":"Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.","mitreText":"CVE-2026-20963","mitreUrl":"https://www.cve.org/CVERecord?id=CVE-2026-20963","publiclyDisclosed":"No","exploited":"No","latestSoftwareReleaseId":2,"latestSoftwareRelease":"Exploitation Less Likely","olderSoftwareReleaseId":0,"denialOfService":"N/A","tag":"Microsoft Office SharePoint","issuingCna":"Microsoft","issuingCnaId":100000001,"severityId":100000001,"severity":"Important","impactId":100000005,"impact":"Remote Code Execution","langCode":"en-US","baseScore":"9.8","temporalScore":"8.5","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","vectorStringSource":"Microsoft","isMariner":false,"customerActionRequired":true,"customerActionRequiredId":1,"cweDetailsList":[{"keys":["cwe","cweUrl"],"values":["CWE-502: Deserialization of Untrusted Data","https://cwe.mitre.org/data/definitions/502.html"]}],"articles":[{"title":"Microsoft Office SharePoint Remote Code Execution Vulnerability","articleType":"100000000","description":"<p>Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.</p>\n","ordinal":10000},{"articleType":"FAQ","description":"<p><strong>How could an attacker exploit this vulnerability?</strong></p>\n<p>In a network-based attack, an unauthenticated attacker could write arbitrary code to inject and execute code remotely on the SharePoint Server.</p>\n","ordinal":10000}],"revisions":[{"cveNumber":"CVE-2026-20963","version":1.1,"revisionDate":"2026-03-17T07:00:00-07:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Updated the CVSS score and corrected FAQs. This is an informational change only.</p>\n","unformattedDescription":"Updated the CVSS score and corrected FAQs. This is an informational change only.","notificationNeeded":true,"notificationSent":false,"sourceId":"e2d3bf31-5922-f111-939a-000d3ac5fb71"},{"cveNumber":"CVE-2026-20963","version":1,"revisionDate":"2026-01-13T08:00:00-08:00","initialDate":"0001-01-01T00:00:00Z","description":"<p>Information published.</p>\n","unformattedDescription":"Information published.","notificationNeeded":false,"notificationSent":false,"sourceId":"36583ae9-e8a9-f011-93ee-000d3afbc7d7"}]}