This script is Copyright (C) 2003-2014 Tenable Network Security, Inc.
The remote FTP server has a format string vulnerability.
The remote WU-FTPd server, according to its version number, is
vulnerable to a format string attack when running in debug mode.
See also :
Upgrade to WU-FTPD version 2.6.2 or later.
Risk factor :
High / CVSS Base Score : 9.3
CVSS Temporal Score : 6.9
Public Exploit Available : false