{"id":"CVE-2026-80098","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-80098","summary":"Improper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges over a network.","details":"Improper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges over a network.","published":"2026-09-03T23:17:20.350","modified":"2026-09-03T23:17:20.350","cvss":{"score":9.3,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80098"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-03T23:17:20.350"}}