Vulnerability is overstated
FFS. This vulnerability was fixed days after it was discovered. We are now 7 dot releases past this fix at 6.42.7 Any decent Network administrator needs to be monitoring and updating the firmware of your products.
Secondly the exploit relies on remote access to your router. What complete idiot allows this? Never let external internet access to your routers configuration. Are you completely crazy. I include a URL with the rule to prevent WAN access