First the raw numbers; we have seven bulletins this month, four critical, and three important. There are three Remote Code Executions, two Elevation of Privilege and two Information Disclosures. Two of the patches definitely require a reboot of your machine, three of them might and two you can get away without restarting after installation.
All right that's the numbers, lets look at what we are dealing with here. Bulletin One is RCE, is rated as critical and impacts just about every version of Windows from XP SP3 on up and Internet Explorer 6 thru10. My guess is this will probably be a use after free vulnerability, we've seen a lot of those lately, they impact a lot of stuff and often result in in RCE.
Bulletin Two is a critical RCE in Silverlight and three is RCE is Visio. We haven't seen many Office vulnerabilities lately, they come around now and then but nowhere near as often as they used to. It will be interesting to see where the issue is here. Bulletin Four is an Elevation of Privilege in SharePoint. We've seen a few Silverlight and SharePoint issues over the last few months; these will probably be similar.
As for the three important bulletins, the first one, bulletin five is Information Disclosure in OneNote, definitely not a package you see in the Microsoft Security Bulletins every month. Another package we don't see to often is Microsoft Office for Mac 2008 and 2011, especially listed by themselves but Bulletin Six looks like it only impacts Office for Mac 2008and 2011. If I was a betting man I might say it could be related to Bulletin Three in Visio, we will have to wait until Tuesday to find out.
And finally Bulletin Seven, Elevation of Privilege in Windows and yes, everything from XP SP3 up to Windows 8 seems to be impacted.
We will know for sure what we are dealing with next Tuesday, so far it doesn't look to bad .