{"id":"CVE-2026-41100","aliases":["EUVD-2026-29686","GHSA-6gm9-cppw-hvx5"],"status":"published","title":"Microsoft 365 Copilot for Android Spoofing Vulnerability","description":"Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.","severity":{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00249,"percentile":0.16309,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2026-05-12T16:58:53Z","modified":"2026-10-26T18:10:00Z","products":[{"vendor":"microsoft","product":"365_copilot"},{"vendor":"microsoft","product":"microsoft 365 copilot for android"},{"vendor":"microsoft","product":"microsoft excel for android"},{"vendor":"microsoft","product":"microsoft loop for android"},{"vendor":"microsoft","product":"microsoft onenote for android"},{"vendor":"microsoft","product":"microsoft powerpoint for android"},{"vendor":"microsoft","product":"microsoft word for android"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41100","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41100"},{"url":"https://github.com/advisories/GHSA-6gm9-cppw-hvx5"}],"sources":{"cve":[{"id":"CVE-2026-41100","title":"Microsoft 365 Copilot for Android Spoofing Vulnerability","description":"Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.","status":"published","published":"2026-05-12T16:58:53.038Z","modified":"2026-08-10T15:13:57.632Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T13:41:08.498858Z"}],"euvd":[{"id":"EUVD-2026-29686","description":"Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.","status":"published","published":"2026-05-12T16:58:53Z","modified":"2026-08-10T15:13:57Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T18:02:01.941928Z"}],"ghsa":[{"id":"GHSA-6gm9-cppw-hvx5","title":"Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.","description":"Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.","status":"published","published":"2026-05-12T18:30:46Z","modified":"2026-05-12T18:30:54Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:08:05.647564Z"}],"nvd":[{"id":"CVE-2026-41100","description":"Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.","status":"published","published":"2026-05-12T18:17:21.507Z","modified":"2026-10-26T18:10:00.173Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:12:18.613259Z"}]}}