As discussed in our previous post, this update was earlier to the usual second Tuesday monthly Security Release because of the alarming increase of Malware and sites exploiting the ANI vulnerability. Please make sure you install this security update right now!
Update: When you install the patch and have a computer with a Realtek Audio card you might get an error message reading "Rthdcpl.exe - Illegal System DLL Relocation". Microsoft has released a hotfix for this so if you have this problem, you can download the fix here.