For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information. The security update addresses the vulnerability by modifying the way that Microsoft Office Word opens specially crafted Word files.

For more information, see the subsection, Affected and Non-Affected Software, in this section.

This security update is rated Important for all supported editions of Microsoft Office Word 2002 and Microsoft Office Word 2003, Microsoft Office 2004 for Mac, Microsoft Office 2008 for Mac, Open XML File Format Converter for Mac, and all supported versions of Microsoft Office Word Viewer. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. An attacker could then install programs view, change, or delete data or create new accounts with full user rights. An attacker who successfully exploited this vulnerability could take complete control of an affected system. This security update resolves a privately reported vulnerability that could allow remote code execution if a user opens a specially crafted Word file. Version: 1.0 General Information Executive Summary Security Bulletin Microsoft Security Bulletin MS09-068 - Important Vulnerability in Microsoft Office Word Could Allow Remote Code Execution (976307)

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