{"id":"CVE-2021-27104","aliases":["EUVD-2021-13874","GHSA-54w2-m25f-gmqp"],"status":"published","title":"Accellion FTA 9_12_370 and earlier is affected by OS command execution via a crafted POST request...","description":"Accellion FTA 9_12_370 and earlier is affected by OS command execution via a crafted POST request to various admin endpoints. The fixed version is FTA_9_12_380 and later.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.46183,"percentile":0.98829,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-78"],"published":"2021-02-16T20:16:42Z","modified":"2026-06-17T03:44:18Z","kev":{"date_added":"2021-11-03","due_date":"2021-11-17","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Known"},"exploitation":[{"source":"euvd","since":"2021-11-03"},{"source":"kev","since":"2021-11-03"}],"products":[{"vendor":"accellion","product":"fta"}],"references":[{"url":"https://www.accellion.com/products/fta/","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt","tags":["x_refsource_MISC","x_transferred","Broken Link","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27104","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27104"},{"url":"https://www.accellion.com/products/fta"},{"url":"https://github.com/advisories/GHSA-54w2-m25f-gmqp"}],"sources":{"cve":[{"id":"CVE-2021-27104","description":"Accellion FTA 9_12_370 and earlier is affected by OS command execution via a crafted POST request to various admin endpoints. The fixed version is FTA_9_12_380 and later.","status":"published","published":"2021-02-16T20:16:42Z","modified":"2025-10-21T23:25:54.311Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-13874","description":"Accellion FTA 9_12_370 and earlier is affected by OS command execution via a crafted POST request to various admin endpoints. The fixed version is FTA_9_12_380 and later.","status":"published","published":"2021-02-16T20:16:42Z","modified":"2025-10-21T23:25:54Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"exploited_since":"2021-11-03","updated_at":"2026-11-02T20:31:25.308373Z"}],"ghsa":[{"id":"GHSA-54w2-m25f-gmqp","title":"Accellion FTA 9_12_370 and earlier is affected by OS command execution via a crafted POST request...","description":"Accellion FTA 9_12_370 and earlier is affected by OS command execution via a crafted POST request to various admin endpoints. The fixed version is FTA_9_12_380 and later.","status":"published","published":"2022-05-24T17:42:21Z","modified":"2025-10-22T00:33:08Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:04:07.67458Z"}],"kev":[{"id":"CVE-2021-27104","title":"Accellion FTA OS Command Injection Vulnerability","description":"Accellion FTA contains an OS command injection vulnerability exploited via a crafted POST request to various admin endpoints.","cwes":["CWE-20","CWE-78"],"kev":{"date_added":"2021-11-03","due_date":"2021-11-17","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Known"},"updated_at":"2026-11-02T17:00:16.541131Z"}],"nvd":[{"id":"CVE-2021-27104","description":"Accellion FTA 9_12_370 and earlier is affected by OS command execution via a crafted POST request to various admin endpoints. The fixed version is FTA_9_12_380 and later.","status":"published","published":"2021-02-16T21:15:13.28Z","modified":"2026-06-17T03:44:18.213Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:06:50.031227Z"}]}}