There is a Denial of Service (DoS) vulnerability that exists in Wing FTP Server 3.1.2. The said vulnerability can be exploited by using an invalid parameter for PORT command. When exploited successfully, the vulnerability could cause FTP server using the said software to crash.
Wing FTP Server 3.1.2 on a Windows environment is affected. Other versions may also be affected.
TREND MICRO PROTECTION INFORMATION
More information on the patch can be found in the following page: