The developer SpecterDev has released a fully-functional kernel exploit for PlayStation 4 (firmware 4.05) dubbed namedobj The kernel exploit was released two months after Team Fail0verflow revealed the technical details about the first PS4 kernel exploit. The availability of the kernel exploit could allow developers to write a working jailbreak and kernel-level modifications to the system. Sony experts at this point, experts at Sony will work to identify flaws triggered by the exploit and fix them.”]
Source: https://securityaffairs.co/wordpress/67162/hacking/ps4-kernel-exploit.html