The security update that this article describes has been replaced by a newer update Microsoft Knowledge Base article 2687626 MS12-046: Description of the security update for Microsoft Office 2003: July 10, 2012.
Office 2003 SP3 contains security enhancements and stability improvements. Some of the fixes included with Office 2003 SP3 were previously released in separate updates. Office 2003 SP3 combines the previously released fixes into one update.
Microsoft has released an update for Microsoft Office 2003. This update provides the framework for SharePoint Team Services to open and save files by using the Open XML file format that is new to the 2007 Microsoft Office system.