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> For ordinary home users, your priority should be updating clients such as laptops and smartphones.

So even if you patch all the devices in your house/company/whetever you can't be safe... Then yours aunt's un-patched android connects into your wifi and put all your network in risk. Or maybe that not-so-old security camera or SmartTV that will never be patched.

Time to move all those guys to an isolated vlan...

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The WPA key is not recovered so it should only affect the unpatched client.

I wasn't even thinking about the key. I was thinking about compromising a device using a targeted tcp hijack. And then using that device to compromise the rest of the network. Long shot tough.

Sure that might be possible, for example to serve some malware to that device. More likely is that a device you allow onto your wifi already have some malware from earlier.

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