Microsoft Patch Tuesday Preview, April 2011

In keeping with its usual schedule, Microsoft released its Security Bulletin Advanced Notification for April, previewing the security fixes it plans to release next Tuesday, April 12.  The company plans to release a total of 17 security bulletins; thirteen of these are for Windows, three are for Microsoft Office, and one for the Visual Studio development tools.  There are nine bulletins rated Critical, and eight rated Important.  All supported releases of Windows are affected, each with several Critical vulnerabilities; the following table gives the breakdown by Windows version.

Windows Version Critical Important Moderate
Windows XP+SP3 7 6
Windows Vista 9 3
Windows Server 2003 5 5 2
Windows Server 2008 7 2 2
Windows 7 8 3
Windows Server 2008 R2 6 2 2

Microsoft’s announcement says that seven of these bulletins will definitely require a system restart; the rest may require a restart, depending on the configuration of your system.

As always, this information is subject to change between now and the actual release of the bulletins next Tuesday.  I will post a note here once the actual updates are available.

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