Two 10k bug bounties were reported to Sony recently. If you're on 11.52 you might get CFW in the future. If you're on 11.50 there's a good chance you will get CFW in the near future. Just don't update and wait and see.
Yep disable internet and automatic updates updates and block Sony in router settings. I have a 11.50 pro in my closet and my main main pro was on 11.52 but updated to 12.00. just gotta take it on the chin and learn from your mistakes so it doesn't happen again.
I remember my old router had no means to block sony, so if you're in that boat, you can use a proxy like cc proxy to block the urls. the only downside is that you'll have to have your computer on to sign in to the internet on the ps4 iirc.
PPPwn is a kernel remote code execution exploit for PlayStation 4 up to FW 11.00. This is a proof-of-concept exploit for CVE-2006-4304 that was reported responsibly to PlayStation.
Supported versions are: