Whatever the reason, the bug exists. Now we have to get it patched. If you’re responsible for Windows® updates on your own computers or a group at work then make sure the patch is installed on Tuesday. If you’re one of our Complete Care customers, be assured your computer is safe. The patch will be installed on Tuesday or the next time you turn your computer on. As part of the Complete Care program this is done for you automatically.
If you want more information (not much is available) go to the Badlock website.