“Microsoft has released a quick fix for a vulnerability in older versions of its Internet Explorer browser that is actively being used by attackers to take over computers.
The vulnerability affects IE versions 6, 7 and 8. The latest versions of the browser, 9 and 10, are not affected. The company occasionally issues quick fixes as a temporary protective measure while a permanent security update is developed if a vulnerability is considered particularly dangerous.”
Source:Microsoft pushes out emergency fix for Internet Explorer vulnerability – Techworld.com