In an earlier blog post, two days ago, Microsoft released Security Advisory 2490606 to address a publicly disclosed vulnerability affecting Microsoft Windows Graphics Rendering Engine.
Microsoft has created a Fix it solution as a workaround option for some scenarios. To enable the solution until a security update is released, download and run Microsoft Fix it 50590. After a security update is released, merely reverse the process by downloading and running Microsoft Fix it 50593.
In addition, users are adviced to enable firewall, get software updates (including third-party software) and install antivirus software.
Via: Microsoft KB2490606.