Today is the second Tuesday of November, so, according to its usual schedule, Microsoft has released this month’s batch of security bulletins and patches for Windows and related software. This month, there are four patches for four identified vulnerabilities. One patch has a maximum severity rating of Critical, two are rated Important, and one is rated Moderate. All supported versions of Windows are affected; for a breakdown of patches by version and severity, check this month’s preview post. Further details, and download links, are in the Security Bulletin Summary for November 2011. Microsoft says that three of the patch installations will definitely require a system restart, and the fourth may require one, depending on the configuration of your system.
As always, I recommend that you update your systems as soon as you conveniently can.
The Internet Storm Center at the SANS Institute has, as usual, released their summary of this month’s patches, along with their severity ratings for client and server systems.