Ipswitch WS_FTP Server Manager 6.1.0.0 and earlier, and possibly other Ipswitch products, might allow remote attackers to read the contents of custom ASP files in WSFTPSVR/ via a request with an appended dot character.
https://exchange.xforce.ibmcloud.com/vulnerabilities/47677
http://www.securityfocus.com/bid/27654
http://www.securityfocus.com/archive/1/487697/100/200/threaded
http://www.securityfocus.com/archive/1/487686/100/200/threaded