source: http://www.securityfocus.com/bid/27654/info

WS_FTP Server Manager is prone to an authentication-bypass vulnerability and an information-disclosure vulnerability.

An attacker can exploit these issues to gain unauthorized access to the affected application and gain access to potentially sensitive information.

These issues affect WS_FTP Server Manager 6.1.0.0; prior versions may also be affected. 

http://www.example.com/WSFTPSVR/FTPLogServer/LogViewer.asp