### [CVE-2016-9499](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9499)
![](https://img.shields.io/static/v1?label=Product&message=FTP%20Server&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%20FTA_9_12_220%20FTA_9_12_220%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-204&color=brighgreen)

### Description

Accellion FTP server prior to version FTA_9_12_220 only returns the username in the server response if the username is invalid. An attacker may use this information to determine valid user accounts and enumerate them.

### POC

#### Reference
- https://www.kb.cert.org/vuls/id/745607

#### Github
No PoCs found on GitHub currently.