Don't need to use "CMD.exe" for execute a commandline application or retreive the output, you can use "lmxendutil.exe" directly.
Try this:
processInfo = new ProcessStartInfo();
processInfo.FileName = "C:\\lmxendutil.exe";
processInfo.Arguments = "-licstatxml -host serv005 -port 6200";
//etc...
Do your modifications to use "command" there.
I hope this helps.