The IBM X-Force Research team has identified a significant data manipulation vulnerability (CVE-2014-6332) with a CVSS score of 9.3 in every version of Microsoft Windows from Windows 95 onward.
We reported this issue with a working proof-of-concept exploit back in May 2014, and today, Microsoft is patching it. It can be exploited remotely since Microsoft Internet Explorer (IE) 3.0. This complex vulnerability is a rare, “unicorn-like” bug found in code that IE relies on but doesn’t necessarily belong to. The bug can be used by an attacker for drive-by attacks to reliably run code remotely and take over the user’s machine — even sidestepping the Enhanced Protected Mode (EPM) sandbox in IE 11 as well as the highly regarded Enhanced Mitigation Experience Toolkit (EMET) anti-exploitation tool Microsoft offers for free.