{"id":"CVE-2026-55946","aliases":["EUVD-2026-82582","GHSA-rq75-5hf2-vppm"],"status":"published","title":"Microsoft Copilot Information Disclosure Vulnerability","description":"Ai command injection in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0039,"percentile":0.3352,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77"],"published":"2026-09-17T22:55:52Z","modified":"2026-11-10T21:29:11Z","products":[{"vendor":"microsoft","product":"copilot"},{"vendor":"microsoft","product":"microsoft copilot"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55946","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55946"},{"url":"https://github.com/advisories/GHSA-rq75-5hf2-vppm"}],"sources":{"cve":[{"id":"CVE-2026-55946","title":"Microsoft Copilot Information Disclosure Vulnerability","description":"Ai command injection in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-17T22:55:52.438Z","modified":"2026-11-10T21:29:11.313Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-77"],"updated_at":"2026-11-10T22:48:51.483784Z"}],"euvd":[{"id":"EUVD-2026-82582","description":"Ai command injection in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-17T22:55:52Z","modified":"2026-11-10T21:29:11Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T22:23:53.990018Z"}],"ghsa":[{"id":"GHSA-rq75-5hf2-vppm","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 disclose information over a network.","status":"published","published":"2026-09-18T00:31:09Z","modified":"2026-09-18T00:31:14Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T15:12:08.779152Z"}],"nvd":[{"id":"CVE-2026-55946","description":"Ai command injection in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-17T23:17:46.687Z","modified":"2026-10-14T23:17:56.073Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:12:49.70655Z"}]}}