{"id":"CVE-2026-41090","aliases":["EUVD-2026-31512","GHSA-xw72-m37w-hm4p"],"status":"published","title":"Microsoft Copilot Tampering Vulnerability","description":"Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.","severity":{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0042,"percentile":0.36831,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77"],"published":"2026-05-22T22:03:09Z","modified":"2026-08-10T15:12:30Z","products":[{"vendor":"microsoft","product":"365_copilot"},{"vendor":"microsoft","product":"microsoft 365 copilot for ios"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41090","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41090"},{"url":"https://github.com/advisories/GHSA-xw72-m37w-hm4p"}],"sources":{"cve":[{"id":"CVE-2026-41090","title":"Microsoft Copilot Tampering Vulnerability","description":"Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-05-22T22:03:09.052Z","modified":"2026-08-10T15:12:30.33Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T13:41:08.498858Z"}],"euvd":[{"id":"EUVD-2026-31512","description":"Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-05-22T22:03:09Z","modified":"2026-08-10T15:12:30Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-02T18:02:02.865075Z"}],"ghsa":[{"id":"GHSA-xw72-m37w-hm4p","title":"Improper neutralization of special elements used in a command ('command injection') in Microsoft...","description":"Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-05-26T13:30:22Z","modified":"2026-05-26T13:30:30Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T15:08:16.245994Z"}],"nvd":[{"id":"CVE-2026-41090","description":"Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-05-22T23:16:52.5Z","modified":"2026-07-23T11:10:00.12Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","level":"critical","assessor":"secondary"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:12:20.131508Z"}]}}