Description: This critical security update resolves three privately reported and one publicly reported vulnerabilities. The most serious of the vulnerabilities could allow remote code execution if a user viewed a specially crafted Web page using Internet Explorer. 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. The security update addresses these vulnerabilities by modifying the way that Internet Explorer handles HTML and validates data, as well as by setting the kill bit for an ActiveX control .

Update type: Critical

Release date: February 12, 2008

Applies to: All

Knowledge base: support.microsoft.com/kb/944533

Download link: 32-bit | 64-bit

Comments: Here are the specifics on the vulnerabilities covered by this update:

• HTML Rendering Memory Corruption Vulnerability - CVE-2008-0076
• Property Memory Corruption Vulnerability - CVE-2008-0077
• Argument Handling Memory Corruption Vulnerability - CVE-2008-0078
• ActiveX Object Memory Corruption Vulnerability - CVE-2007-4790