It is not possible to have a Patch Tuesday happen any earlier in a given month which is why I was caught off guard when the advance notice for this month’s security updates hit my inbox yesterday.

This month is a fairly average month based on the numbers.  The series of updates cover seven bulletins with three listed as Critical and the other four as Important

Here is the summary of software that is being updated:

Windows Based Operating Systems and Servers

  • Windows XP with SP3
  • Windows XP Professional x64 with SP2
  • Windows Vista with SP2
  • Windows Vista x64 with SP2
  • Windows 7 x86/x64
  • Windows 7 x86/x64 with SP1
  • Windows Server 2003 with SP2
  • Windows Server 2003 x64 with SP2
  • Windows Server 2003 for Itanium Systems with SP2
  • Windows Server 2008 x86/x64 with SP2
  • Windows Server 2008 for Itanium Systems with SP2
  • Windows Server 2008 R2 x64
  • Windows Server 2008 R2 x64 with SP1
  • Windows Server 2008 R2 for Itanium Systems with SP1

Office Suites and Components

  • Office 2003 with SP3
  • Office 2007 with SP2
  • Office 2007 with SP3
  • Office 2010 x86/x64
  • Office 2010 x86/x64 with SP1
  • Office 2008 for Mac
  • Office for Mac 2011
  • Excel Viewer
  • Visio Viewer 2010
  • Office Compatibility Pack SP2
  • Office Compatibility Pack SP3

Developer Tools and Software

  • Silverlight 4
  • Silverlight 5

Microsoft will release the full details and update the bulletins once the updates are available for download which is typically around 10:00 AM Eastern Time on Patch Tuesday.

A webcast will be hosted by Microsoft on May 9, 2012, at 11:00 AM Pacific Time to discuss and field questions about these updates. You can register now for the May Security Bulletin Webcast here.  If you are unable to watch it live it will be available on demand afterwards.