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Microsoft releases patch for critical IE security flaw

Faced with malicious attackers exploiting Internet Explorer, Redmond releases a critical security patch outside its normal cycle.

Dawn Kawamoto Former Staff writer, CNET News
Dawn Kawamoto covered enterprise security and financial news relating to technology for CNET News.
Dawn Kawamoto

Microsoft released a critical security patch on Wednesday to plug vulnerabilities in Internet Explorer, a move that comes amid malicious attackers taking advantage of the security flaws.

The patch is designed to prevent attackers from downloading malware onto users' computers if they visit a malicious Web site, or a legitimate Web site that has been infected.

This zero-day exploit has been in circulation since the first week of December and potentially could have infected a wide swath of users.

The vulnerabilities are found in not only IE 7, Microsoft's latest browser, but also Internet Explorer 5.01, Internet Explorer 6, and Internet Explorer 6 Service Pack 1.