Microsoft issues patches for XP, Windows 2003, Windows 7 and Windows Server 2008. Remote Desktop Services allows admins to connect to other computers on a network without any authentication. Windows 8 and 10 and later operating systems are not affected, and Remote Desktop Protocol itself is not vulnerable. As of Tuesday, the bug apparently wasn’t being exploited in the wild, but organizations should not delay patching, writes Dustin Childs of Trend Micro’s Zero Day Initiative. Some 3 million systems have RDP exposed to the internet, according to a search of the Shodan search engine.”]
Source: https://www.cuinfosecurity.com/to-prevent-another-wannacry-microsoft-patches-old-oss-a-12483