According to the Microsoft Security Response Center, Microsoft will issue six Security Bulletins on Tuesday, and it will host a webcast to address customer questions about the bulletins the following day (November 10 at 11:00am PST, if you're interested). Three of the vulnerabilities are rated "Critical," and the other three are marked as "Important." All of the Critical vulnerabilities earned their rating through a remote code execution impact, meaning a hacker could potentially gain control of an infected machine. At least four of the six patches will require a restart.