This is pretty unbelievable. A major exploit was announced, diagnosed, and confirmed. While Microsoft has sat on their ass and said they won’t have a patch available FOR ANOTHER WEEK, someone has reverse engineered the binary and issued their own patch. The patch has been verified by a number of reliable sources as being trustworthy, effective, and reversible. Install it now, if you use Windows.
I’m not a lawyer, but this sounds like grounds for bringing a negligence lawsuit against Microsoft. It is completely unacceptable that the fix is simple enough that it can be done by someone without access to the source, there are known exploits in the wild, and it’s going to take another week for an official patch.