The remote system is running CesarFTP server, which is vulnerable to a buffer overflow attack. Description : CesarFTP Server version <= 0.99g is prone to a buffer overflow attack when using some ftp command followed with a long string of arguments. The system could crash, and accepts/execute arbitrary commands after the initial overflow attack. Note that the service runs with LOCAL SYSTEM privileges on the remote host, which means that an attacker can possible gain complete control over the system. To use the flaw an attacker needs access to the requested FTP server, by using a valid account/password or if activated the anonymous account. See Also : http://secunia.com/advisories/20574/

At time of writing there is no update available. Filter access to the FTP service, so that it can be used by trusted sources only.