Sony’s PlayStation 4 has been in the market for a while now, and since its release, hackers have been tinkering with it to find a way to run unauthorized software. A hacker who calls himself CTurt has claimed to develop a fully jailbroken version of the PlayStation 4 with the help of a kernel exploit. The current jailbreak allows dumping of the system RAM from other processes and installing custom firmware that can be used to run homebrew applications that aren’t approved by Sony. The exploit only works for PlayStation 4 firmware version 1.76, but apparently it can be tweaked to work for more recent firmware.
Source: https://thehackernews.com/2015/12/sony-ps4-playstation-jailbreak.html