If your Windows 10 boxes -- all of them, both desktops and servers, didn't apply the update that came out Tuesday, go do that now. You can chase the references below while the update is downloading.
Here's what Microsoft said about it when they released the patch. There are more details in the resource list below. Some of those go on to link to proof-of-concept exploits. Good luck!
h/t to @thnidu.