{"id":"CVE-2026-66805","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-66805","summary":"Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","details":"Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","published":"2026-08-11T17:19:01.850","modified":"2026-08-11T17:19:01.850","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66805"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-11T17:19:01.850"}}