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I missed this article when it was released. I am glad that Apple was able to path the vulnerability. That was one nasty exploit. I wonder how many people decided to keep WiFi off (as a future preventative measurable against other nasties) unless absolutely necessary after reading this article.
 
I cannot find what versions of iOS this impacts (other than some 12.x and 13.x versions). How far back does it go?

It's fixed on all iPhone models made in the past 7 years (iPhone 5S and newer, iOS 12.4.7 and newer). What about iOS 10/9/7/6? (from the past few iPhone models) Are those iOS versions or devices even vulnerable?
My own opinion is that if one is running anything earlier than iOS 12 on 64 bit devices, there is some flaw somewhere in the wild just waiting.
 
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