Microsoft Security Advisory 912840 issued for WMF vulnerabilities
Microsoft has issued a security advisory to share initial information on this new unpatched vulnerability which is being exploited in-the-wild. As Microsoft advises keep your AV and anti-spyware software updated to the latest definitions.
Microsoft Security Advisory (912840)
Vulnerability in Graphics Rendering Engine Could Allow Remote Code Execution
http://www.microsoft.com/technet/security/advisory/912840.mspx