MS has not released a patch for this vulnerability, but here are some steps to protect yourself.
1 - Don't use an account that has admin rights as your primary user account. Have an admin account but only use it to install applications. There is a way to run a exe as another user.
2. Run a fix it if provided. In this case for this vuln, a fix it is provided by MS.
3. Be careful what you open. Social engineering is how a lot of hackers rely on successfully gaining access to peoples systems.
Here is a video displaying this exploit in action: