Netgear has rolled out a patch for the ORBI system that patches the WPA2 KRACK vulnerability (V2.0.0.76). It will not show up as an online update, it must be installed manually. I uploaded the patch yesterday. For those with other routers, you may want to check, as it seems Netgear is finally getting these updates out to us.

https://kb.netgear.com/000049562/RBR50-RBS50-Firmware-Version-2-0-0-76-Hot-Fix