CVE-2021-27102: Accellion FTA OS Command Injection Vulnerability

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 3.7% chance of exploitation in the next 30 days.

Accellion FTA 9_12_411 and earlier is affected by OS command execution via a local web service call. The fixed version is FTA_9_12_416 and later.

Affected products

• Accellion FTA: up to and including 9_12_411

Published 2021-02-16. Last modified 2026-06-17.