An exploit for the PS4's firmware 7.55 was revealed today by hacking scene member TheFlow. However, it was actually reported back in June 2020 and disclosed only today as TheFlow worked with Sony's HackerOne bounty program to patch this vulnerability. The reported exploit was marked as resolved in October. TheFlow also did similar disclosures with previous exploits he found and helped fix.

The HackerOne page notes that this vulnerability can cause a "fully chained remote attack" when used with a WebKit exploit, steal/manipulate user data and even dump and run pirated games. As such, it could be used together with the Webkit exploit from last December to jailbreak PS4 systems on firmware 7.55. However, no relevant files have been made publicly available regarding the FW 7.55 exploit with today's disclosure.

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[ilikewaffles]

This opens more systems up for homebrew, which is nice
Also, He discovered it, it is totally within his right to report it

 

[godreborn]

Are the recovery files for when you want to restore your PS4?
I'm planning to upgrade my HDD to a bigger one later this year but I want to stay in 7.51.

Yes, you'd use it when upgrading hdd.

 

[RedBlueGreen]

Just booted my PS4, I'm on 7.55.

 

[Der_Blockbuster]

Yes, I'm clearly the toxic one here...

Getting called out, and pointing the finger on someone else.