Bad CV axle? help

[Java]

Got stuck in 2wd. Put the truck into 4wd while stopped. Loud crunching from front of truck upon giving some gas forward and reverse. No obvious damage on inspection. Got unstuck and out of the sand. At home looking under the truck I see a wet spot (not the good kind) at the passenger CV with fluid. I thought failure would be down at the boots. New CV axle or are there other options?

 

[Towerhog]

Looks like a seal. You will have to remove your CV shaft to get to it.

Looks like 4B416 is the seal.

 

[Mil T]

Looks like it's been seeping for a while. Didn't just happen, that's for sure. Not a real big deal but you should get it fixed soon. Does truck still have warranty. should be warranty item.