<p>Microsoft will address 11 vulnerabilities this month, fixing flaws in Internet Explorer,Microsoft Office and Microsoft Exchange Server.</p><p>Seven Microsoft security bulletins, five critical and two important, will be released in theDecember 2012 Patch Tuesday update, according to the Patch Tuesday Advancenotification issued by the software giant. The updates impact Microsoft Windows, Word, WindowsServer and Internet Explorer. All currently supported operating systems are affected, the softwaregiant said.</p><p>Bulletins 1 through 5 fix critical remote code execution vulnerabilities. Bulletin 1 requires arestart and affects Internet Explorer (IE) 9 and 10. IE 6, 7 and 8 will also be updated to addressthis issue.</p><p>"This flaw exists in IE 6, 7 and 8, but it's not exploitable in those versions," said MarcusCarey, a security researcher at Boston-based security vendor Rapid7 Inc.</p><p><a href="http://searchsecurity.techtarget.com/news/2240174035/Patch-Tuesday-Five-critical-bulletins-Exchange-Server-fix-expected">Keep reading...</a></p><p>Read also:</p><p><a href="http://www.net-security.org/secworld.php?id=14081">Microsoft to release five critical bulletins</a> (Help Net Security)</p><p><a href="http://www.v3.co.uk/v3-uk/news/2230328/microsoft-preps-five-critical-fixes-with-december-update">Microsoft&#039;s December Patch Tuesday to generate &quot;howls of protest&quot;</a> (V3.co.uk)</p><p><a href="http://gcn.com/articles/2012/12/06/icewarp-messaging-system-warms-to-windows-8.aspx">IceWarp messaging system warms to Windows 8</a> (GCN.com)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=db181lEqcoBuwzMOaTsOkcNWwPJEM&ned=us">29 additional articles.</a></p>