This is not a security blog, but the Microsoft WMF vulnerability is serious enough that everyone should be made aware of it.
Here’s Steve Gibson’s notes on the vulnerability with a link to a good open source temporary fix that will give protection until Microsoft patches the problem.
Security Now! Notes for Episode #20
As always, you should google around until you have enough up-to-date information to make an informed decision on how to react to this threat.
–pmh