{"id":"CVE-2026-64901","title":"Microsoft SharePoint Server Remote Code Execution Vulnerability","summary":"Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-502"],"vendor":"Microsoft","product":"Microsoft SharePoint Enterprise Server 2016","affected":["sharepoint_enterprise_server_2016 >= 16.0.0 < 16.0.5565.1001","sharepoint_server_2019 >= 16.0.0 < 16.0.10417.20198","sharepoint_server_subscription_edition >= 16.0.0 < 16.0.19725.20522"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-08-07T00:00:00+00:00"},"published":"2026-08-11","updated":"2026-09-16","sourceUpdated":"2026-09-16T16:26:11.039Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64901","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64901","label":"Microsoft SharePoint Server Remote Code Execution Vulnerability"}],"tags":["cve.org"],"epss":0.01908,"epssPercentile":0.78582,"ingestedAt":"2026-09-08T18:07:34.889Z","slug":"CVE-2026-64901","body":"## Overview\n\nDeserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.\n\n## Affected\n\n- `sharepoint_enterprise_server_2016 >= 16.0.0 < 16.0.5565.1001`\n- `sharepoint_server_2019 >= 16.0.0 < 16.0.10417.20198`\n- `sharepoint_server_subscription_edition >= 16.0.0 < 16.0.19725.20522`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.4,"exploitation":0,"ransomware":0},"changes":[]}