The 19 year old bug that affects every version of Microsoft Windows from Windows 95 onwards is now being exploited by a group believed to be behind Operation Clandestine Fox. According to the security firm FireEye the bug reported by IBM X-Force Research team and a separate Windows privilege escalation vulnerability have been targeted by a group called APT3.
Read more here – https://www.fireeye.com/blog/threat-research/2014/11/operation_doubletap.html