<p>Microsoft has released 19 security fixes for flaws in key services such as Internet Explorer (IE) and Outlook, in its latest Patch Tuesday update.</p><p>The biggest fix is for a critical vulnerability in IE known to have been targeted with an advanced watering hole attack. The attack was originally spotted by security firm FireEye and is listed as being particularly dangerous because of its advanced defence-dodging powers.</p><p>Tripwire technical manager of security research and development Tyler Reguly highlighted patches for a vulnerability in Microsoft Outlook and technical issues in Windows Schannel.dll and Hyper-V Server as also being of interest.</p><p>"The more interesting patches this month are for a unique Outlook vulnerability that could allow port-scanning, a Hyper-V vulnerability that could allow Guest operating system code execution, and an X.509 issue in Schannel.dll that could allow denial of service," he said.</p><p><a href="http://www.v3.co.uk/v3-uk/news/2306713/microsoft-plugs-windows-internet-explorer-and-outlook-vulnerabilities">Keep reading...</a></p><p>Read also:</p><p><a href="http://www.zdnet.com/microsoft-patches-21-flaws-including-ie-zero-day-7000023105/">Microsoft patches 19 flaws, including IE zero day</a> (ZDNet)</p><p><a href="http://www.techrepublic.com/blog/windows-and-office/its-microsoft-patch-tuesday-november-2013/">It&#039;s Microsoft Patch Tuesday: November 2013</a> (TechRepublic (blog))</p><p><a href="http://searchwindowsserver.techtarget.com/news/2240208910/Patch-Tuesday-fixes-for-critical-IE-important-Hyper-V-vulnerabilities">Patch Tuesday fixes for critical IE, important Hyper-V vulnerabilities</a> (TechTarget)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=d1tf3vn6QBKlb0MovhOiXqBaAn-eM&ned=us">117 additional articles.</a></p>