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Nevertheless, this is the first public released exploit for PS4 in a very long time (the last release was a 3.55 Webkit PoC in August 2016), and could trigger some further releases if it sparkles interest in the scene.
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In other words, this is not something that is directly useful to the end user, and does not imply any jailbreak is coming soon (Firmware 3.55 has had a webkit exploit for quite some time now, but is still not fully hacked). I would expect an upcoming release of known tools such as PS4 playground for tinkerers to easily start playing. The hacker gave the precision that this gives you arbitrary read/write, meaning hackers can start poking into memory. This is not a full console jailbreak, simply a usermode exploit within webkit at this point. What does the PS4 4.0x Webkit Exploit mean to the end user? We might see a writeup on the vulnerability at some point.
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I assume people can start digging into the details of the exploit, however qwertyoruiop gave the precision that the exploit is triggered by a Use After Free vulnerability.
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