Most Broadcom chipsets are not vulnerable because they run linux which uses a cryptographically secure method of generating random keys with good sources of entropy... it's pretty much completely unpredictable as of right now. In the future, something could certainly be found but not right now. The only Broadcom devices that will work are devices the run eCos which are typically found in DSL/Wireless gateway modems or Cable modem/Gateways.
