Exposed cat6 cables

I had a CCTV installer run cat6 Ethernet cable for some cameras. They used internal grade cat6 cables and when I asked about UV protection and waterproofing, they said it was fine since it was cat6 and unlikely to go bad.

Another installer said the same to me on the phone.

Is this correct? There is only a small section where the internal grade cat6 cable comes out of the wall and into the junction box that is exposed.