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    Microsoft Security Vulnerability

    This security update resolves one publicly disclosed vulnerability and five privately reported vulnerabilities in Microsoft Office. The most severe vulnerability could allow remote code execution if a user opens or previews a specially crafted RTF e-mail message. An attacker who successfully exploited any of these vulnerabilities could gain the same user rights as the local user. 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.

    This security update is rated Critical for all supported editions of Microsoft Office 2007 and Microsoft Office 2010. This security update is also rated Important for all supported editions of Microsoft Office XP, Microsoft Office 2003, Microsoft Office 2004 for Mac, Microsoft Office 2008 for Mac, and Microsoft Office for Mac 2011; and Open XML File Format Converter for Mac. For more information, see the subsection, Affected and Non-Affected Software, in this section.

    The update addresses the vulnerabilities by modifying the way that Microsoft Office software parses files and by helping to ensure a vulnerable component of Microsoft Office uses a more appropriate and secure search order when loading libraries. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

    Recommendation. Microsoft recommends that customers apply the update immediately.

    Known Issues. Microsoft Knowledge Base Article 2423930 documents the currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues. When currently known issues and recommended solutions pertain only to specific releases of this software, this article provides links to further articles.

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