This is a quick-and-dirty scanner for the CVE-2019-0708 vulnerability in Microsoft Remote Desktop. Right now, there are about 900,000 machines on the public Internet vulnerable to this vulnerability, so many are to expect a worm soon like WannaCry and notPetya. Therefore, scan your networks and patch (or at least, enable NLA) on vulnerable systems.
This is a command-line tool. You can download the source and compile it yourself, or you can download one of the pre-compiled binaries for Windows or macOS from the link above.