WinSyslog (DoS)

Summary
WinSyslog is an enhanced syslog server for Windows. A vulnerability in the product allows remote attackers to cause the WinSyslog to freeze, which in turn will also freeze the operating system on which the product executes. Vulnerable version: WinSyslog Version 4.21 SP1 (http://www.winsyslog.com)
Solution
contact vendor http://www.winsyslog.com