You want indoor Cat3 cable for all your networking needs.
haha....NO! just joking
Cat5e works for camera systems in today's world. Cat6 is better only because future proof. Though I do not see cameras going 1000baseT anytime in my lifetime.
To play it safe as folks mentioned above... if the cable sees grass or sunlight, go direct burial cable that has UV protection. For my 2nd floor soffits, I did not follow my own advice, only because I know the pro's/con's. My cable is plastic stapled to the underside of the soffit/rafters. They will never see direct sunlight, rain, nor snow...however are exposed to indirect UV. I am thinking...5-20 years I may have to replace.
I did dig a 50' trench to install a 24v DC lamp post, security system PIR, Dahua 5442 IP camera, and future LPR camera...all using direct burial Cat6 inside of 1" PVC. Just takes one shovel or fence post to make your day bad if you just slap in cable without protection. And yes, you can put DC on solid core Cat6 cabling...same for security sensors.