Consumer routers have had issues, but often because "manufacturers don’t issue patches or they don’t bother to notify people when their router is end of life and no longer receiving security updates,” EFF’s @Thorin told @newyorktimes.
https://www.nytimes.com/wirecutter/reviews/foreign-made-wi-fi-routers-ban/
https://www.nytimes.com/wirecutter/reviews/foreign-made-wi-fi-routers-ban/
