Playstation 4 latest firmware version has been hacked

It's not the latest version, there's a full exploit chain for 6.72, and partial chain for 7.02 (no usermode entry point to exploit the kernel escalation yet) and 7.50 already fixed this exploit back in April.

7.02 was the current firmware when the exploit was discovered but the researcher cashed out $10,000 from Sony's bug bounty program in exchange for sitting on it until it was fixed.