So while angel grinding drop links off the Impreza, think they've been on since new, the bolts have rusted away. I caught the CV boot

Tired to do a temp fix until new cv boot arrived. But unfortunately temp fix didn't work and aload of the grease has come out, noticed this after hearing a noise front.

So my question is I've stopped driving it, do I replace the boot and regrease or replace the cv joint aswell?