CVE-2021-27104
Accellion FTA OS Command Injection Vulnerability
Published Feb 16, 2021 · updated Jun 16, 2026 · accellion fta
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.
Code
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Timeline
Detection, updates, and resolution for this record.
Feb 16, 2021 · Catalog
Detected
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.
Nov 3, 2021 · CISA KEV
Known exploited
Apply updates per vendor instructions.
Nov 17, 2021 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Jun 16, 2026 · Catalog
Updated
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.
Required action
Apply updates per vendor instructions.
CISA due date Nov 17, 2021
Affected
- cpe accellion/ftaversion unspecified
- vendor Accellion FTAversion unspecified
Sources
- CISA KEVConfirmed exploitationCVE-2021-27104
Accellion FTA contains an OS command injection vulnerability exploited via a crafted POST request to various admin endpoints.
cisa.gov - CVE.orgVulnerability recordCVE-2021-27104
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2021-27104
30-day exploitation probability 56.7%
first.org - NIST NVDVulnerability recordCVE-2021-27104
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.
nvd.nist.gov