This security update is rated Critical for Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8. For more information about the vulnerabilities, please see the full bulletin.
The security update addresses the vulnerabilities by modifying the way that Internet Explorer handles objects in memory and script during certain processes. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.
This security update also addresses the vulnerability first described in Microsoft Security Advisory 2458511.
The majority of customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.
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