{"cve":"CVE-2021-27104","nvd":{"published":"2021-02-16T21:15:13.280","modified":"2026-06-17T03:44:18.213","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-78"],"references":["https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt","https://www.accellion.com/products/fta/","https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt","https://www.accellion.com/products/fta/","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27104"],"products":["accellion:fta"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-27104","score":0.56686,"percentile":0.99063,"date":"2026-11-01"},"kev":{"cve":"CVE-2021-27104","date_added":"2021-11-03","due_date":"2021-11-17","vendor":"Accellion","product":"FTA","known_ransomware":true},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}