Critical patches for the company's operating systems affect Windows 2000, XP, Server 2003, Vista and Server 2008 (including Server Core installations).
Microsoft has warned that the two bulletins affecting Windows have maximum security ratings of critical, and applying the patches will require a restart.
Another critical issue affects Internet Explorer versions 5, 6 and 7, though the problem is only considered moderate for IE 6 on Windows Server 2003.
The Windows Media code is also due for an update, with an important bulletin covering Windows Media Player 6.4; Windows Media Format Runtime 7.1, 9.0, 9.5 and 11; and Windows Media Services 4.1 and 9.
Multiple bulletins affect Microsoft Office components and related software.
Please read on for more details.
A critical Visual Basic patch applies to FrontPage 2002 and Project 2003 and 2007, plus Visual Basic 6.0, VB .NET 2002, and Visual FoxPro 8.0 and 9.0.
Associated programs also covered by these bulletins are Outlook 2007; the Open XML File Format Converter for Mac; Works 8.5; Excel Viewer (including the 2003 version); Word Viewer 2003; and Compatibility Pack for Word, Excel and PowerPoint 2007 File Formats.
An important bulletin is planned for SharePoint Server 2007 and Search Server 2008.
The regular monthly updates to the Malicious Software Removal Tool and the Windows Mail Junk E-mail Filter also planned.
Microsoft has also scheduled a daylight saving time revision for XP, Server 2003, Vista and Server 2008, as well as an application compatibility update for Vista and Server 2008.
The above bulletins are scheduled for release on December 9 at around 10am, US PST.