Microsoft released Security Advisory 2887505 which relates to an issue with Internet Explorer.
It is important to note that there are a limited number of targeted attacks which are specifically directed at Internet Explorer 8 and 9. The issue, however, could potentially affect all supported versions of IE.
As described by Dustin Childs in the below-referenced MSRC Blog post,
Links to the Microsoft Fix it for IE 8 and IE9 as well as additional mitigations and references are available in my blog post at Security Advisory 2887505 and Microsoft Fix it.
