Coverage is provided as :
RDN/Generic PWS.y!yw, and
in the 7457 DATs, released June 2.
I'm sorry, but I can't answer questions about McAfee M-4050; I do not have sufficient expertise in Network Security Platform. I posted the only information I had which I thought might be relevant.
If you wait a little longer someone from the Business section should answer your question.
If I am not terribly mistaken. Ex_brit posted about the Latest "Stinger" available to scan your system for such yesterday. It has downloads for ePO and x64 systems. I ran it myself and was determined clean.
Just thought I would add that....