Edit to add: independent of what Intel might say about this (given it seems it has taken 5 years to disclose this and 5 major firmware versions I won't trust too much what they say about consumer pcs not being affected). Check if your cpu and motherboard support AMT and if it is enabled. All workstations I've worked with have it, but there are a lot of machines that have it disabled by default unless you specifically turn it on. So, you might be affected if you have a "supported" processor and (I guess) an Intel NIC onboard and wired, and remote capabilities enabled.
Much stuff is going to be hitting fans.