The flaw enabled attackers to create new exploits that cheat two widely respected Microsoft security features and wage targeted attacks on end user computers.
The vulnerability could allow remote code execution if a user views a specially crafted Web page -- sometimes called a "watering hole" -- using Internet Explorer, Microsoft said. An attacker who successfully exploited this vulnerability could gain the same user rights as the current user.
The flaw affects users of Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8, Microsoft stated. Internet Explorer 9 and Internet Explorer 10 are not affected.
The security update fixes the vulnerability by modifying the way that Internet Explorer handles objects in memory, Microsoft said.
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