You probably have heard the recent news about a widespread attack that was carried out using a 0-Day exploit for Internet Explorer as one of the vectors. This exploit is also known as the "Aurora Exploit". The code has recently gone public and it was also added to the Metasploit framework.

Analysis of 'Aurora' exploit.

The Trojan.Hydraq Incident: Analysis of the Aurora 0-Day Exploit | Symantec Connect