{"id":"CVE-2026-63520","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-63520","summary":"Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.","details":"Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.","published":"2026-08-11T17:18:47.377","modified":"2026-08-13T13:38:30.453","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.02893,"percentile":0.8613,"asOf":"2026-09-13"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"FIX","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63520"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-13T13:38:30.453"}}