The remote host is vulnerable to a remote buffer overflow attack.
The remote host is running Serv-U File Server, an FTP server for Windows. The installed version is earlier than 184.108.40.206. Such versions are potentially affected by a remote buffer overflow vulnerability caused by a boundary error in a function when processing a hexadecimal representation of a string using a TEA decoding algorithm.
Upgrade to Serv-U version 220.127.116.11 or later.