This update addresses seven privately reported vulnerabilities and one publicly disclosed vulnerability. The security update addresses these vulnerabilities by modifying the way that Internet Explorer handles scripts, cached content, and initializes memory. For detailed information on the contents of this update, please see the following documentation:
This security update is rated Critical for Internet Explorer 5.01 on Windows 2000, Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on supported editions of Windows XP and Windows Vista. The security update is rated Important for Internet Explorer 6 Service Pack 1 on support editions of Windows 2000. The security update is rated Moderate for Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on supported editions of Windows Server 2003 and Windows Server 2008. For Internet Explorer Beta products, download locations are available in the Knowledge Base Article.
IE security updates are cumulative and contain all previously released updates for each version of Internet Explorer.
I encourage everybody to download this security update and other non-IE security updates via Windows Update or Microsoft Update. Windows users are also strongly encouraged to configure their systems for automatic updates to keep their systems current with the latest updates from Microsoft.
Internet Explorer Security
Update 6/9 - typo correction in the second paragraph.