Description of the security update for Word 2003: April 12, 2005 A security vulnerability exists in Microsoft Office Word 2003 that could allow arbitrary code to run when you open a maliciously modified document. This update resolves the vulnerability so that Word documents are handled appropriately.
Description of the update for Office 2003: May 19, 2006 Describes the Office 2003 update that is dated May 19, 2006. Explains that you must install the update before you use Office 2003 to open and to save files by using the Open XML file format that is new to the 2007 Microsoft Office system.