<p>Microsoft says it is investigating reports of a vulnerability in Internet Explorer 6, 7, 8, and9 as well as targeted attacks that have attempted to exploit the vulnerability.</p><p>The zero-day flaw, which does not affect Explorer 10, was identified by researcher Eric Romang,according to a blogpost by security research firm Rapid7, which has incorporated the exploit into its Metasploittesting tool.</p><p>"The exploit, which had already been used by malicious attackers in the wild before it waspublished in Metasploit, is affecting about 41% of Internet users in North America and 32%world-wide [according to StatCounter], the company said.</p><p>"We have added the zero-day exploit module to Metasploit to give the security community a way totest if their systems are vulnerable and to develop counter-measures," Rapid7 added.</p><p><a href="http://www.computerweekly.com/news/2240163400/Microsoft-investigates-IE-zero-day-flaw">Keep reading...</a></p><p>Read also:</p><p><a href="http://www.ghacks.net/2012/09/18/new-internet-explorer-0-day-vulnerability-sept-2012/">New Internet Explorer 0-day Vulnerability (Sept. 2012)</a> (Ghacks Technology News)</p><p>Explore: <a href="http://news.google.com/news/more?pz=1&ned=us&ncl=dEyifFwUZjnsH3M1ofju0c5iiP4pM">736 additional articles.</a></p>