The remote FTP server is affected by an information disclosure vulnerability.
The remote FTP server is running Serv-U file Server, an FTP server for Windows. The installed version is earlier than 18.104.22.168. Such versions are potentially affected by an information disclosure vulnerability which could allow an attacker to view directories that are above the user's root directory.
Upgrade to Serv-U version 22.214.171.124 or later.