CVEvulnerability

CVE-2021-27104

9.8 CRITICAL Known exploited Published 2021-02-16 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Accellion FTA OS Command Injection Vulnerability — Accellion FTA

Accellion FTA contains an OS command injection vulnerability exploited via a crafted POST request to various admin endpoints.

Added to KEV
2021-11-03
Remediation due
2021-11-17
Ransomware use
Known
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-27104
Status
Analyzed
Published
2021-02-16
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-78

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.

Affected configurations

• accellion fta (<= 9 12 370)

Related

Weakness · CWE (1)

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness

References