{"id":"CVE-2026-85885","aliases":["EUVD-2026-82588","GHSA-jjmx-rwxc-vwh4"],"status":"published","title":"Microsoft 365 Copilot Elevation of Privilege Vulnerability","description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.","severity":{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0072,"percentile":0.54364,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77"],"published":"2026-09-17T22:55:55Z","modified":"2026-11-10T21:29:14Z","products":[{"vendor":"microsoft","product":"365_copilot"},{"vendor":"microsoft","product":"microsoft 365 copilot"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85885","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85885"},{"url":"https://github.com/advisories/GHSA-jjmx-rwxc-vwh4"}],"sources":{"cve":[{"id":"CVE-2026-85885","title":"Microsoft 365 Copilot Elevation of Privilege Vulnerability","description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-09-17T22:55:55.696Z","modified":"2026-11-10T21:29:14.583Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-77"],"updated_at":"2026-11-10T22:48:54.515847Z"}],"euvd":[{"id":"EUVD-2026-82588","description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-09-17T22:55:55Z","modified":"2026-11-10T21:29:14Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-10T22:23:53.990018Z"}],"ghsa":[{"id":"GHSA-jjmx-rwxc-vwh4","title":"Improper neutralization of special elements used in a command ('command injection') in M365...","description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-09-18T00:31:09Z","modified":"2026-09-18T00:31:10Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T15:12:08.779152Z"}],"nvd":[{"id":"CVE-2026-85885","description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-09-17T23:18:53.08Z","modified":"2026-09-25T20:00:26.797Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:12:49.70655Z"}]}}