Microsoft has released six new security bulletins with fixes for a total of 15 vulnerabilities affecting its Windows and Office product lines. Three of the six bulletins are rated “critical,” meaning they can be used to launch remote code execution or worm attacks without any user action. One of the Windows vulnerabilities could expose users to drive-by malware attacks via the browser.

Security bulletins are released monthly to resolve critical problem vulnerabilities. This article provides you with an overview of the new security bulletins being released on November 10, 2009.