This isn't solved. This a mitigation that most of the customers will struggle to implement.
This issue has been known about by ISPs since MAY 2019, the fix has been published a requires a firmware which can only be done by the ISP. Which I suspect there will be reluctance as this causes an outage for ~1hr. But if the bad guys get in first they can upload their own firmware which will lock out the ISP.. What are you planning to do about this?
Exploit code is already available if you search for it.. I don't think this can be ignored.