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

Source: https://junglewise.ai/threats/cve-2021-27102-accellion-fta-os-command-injection-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-11-03. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2021-27102 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03

Accellion FTA contains an OS command injection vulnerability that can be exploited via a local web service call. Successful exploitation allows an attacker to execute arbitrary commands on the underlying operating system.

Technologies: [Accellion FTA](https://junglewise.ai/threats/technologies/fta). Vendors: [Accellion](https://junglewise.ai/threats/vendors/accellion).

## Quick answers

**Is CVE-2021-27102 exploited in the wild?** Yes. CVE-2021-27102 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2021-27102?** Critical severity, with a CVSS score of 7.8, published 3 November 2021.

**Which products and versions are affected?** Accellion FTA 9_12_411 and earlier.

**Is there a fix for CVE-2021-27102?** A patch was published on 2021-02-19: NVD assessment and fix version FTA_9_12_416 identified Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2021-27102 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2021-27102?** Check whether you run Accellion FTA. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Accellion FTA 9_12_411 and earlier

## Timeline

- 2021-02-16: disclosed: NVD Published Date
- 2021-02-19: patched: NVD assessment and fix version FTA_9_12_416 identified
- 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

## Related threats

- [Accellion FTA OS Command Injection Vulnerability](https://junglewise.ai/threats/cve-2021-27104-accellion-fta-os-command-injection-vulnerability)
- [Accellion FTA SQL Injection Vulnerability](https://junglewise.ai/threats/cve-2021-27101-accellion-fta-sql-injection-vulnerability)
- [Accellion FTA Server-Side Request Forgery (SSRF) Vulnerability](https://junglewise.ai/threats/cve-2021-27103-accellion-fta-server-side-request-forgery-ssrf-vulnerability)