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[ CVE-2021-27104 · Published 16 Feb 2021 ]

Accellion FTA OS Command Injection Vulnerability

Exploited · CISA KEV CVSS 9.8 EPSS 57%No fix listed yet

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03
  • Known to be used in ransomware campaigns
  • EPSS: 57% chance of exploitation in the next 30 days (higher than 99% of CVEs)
  • Critical severity: CVSS 9.8

[ Description ]Official 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.

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

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 17 Nov 2021): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References