Whether it's software or hardware, it's always a cat and mouse game between cracking and anti-cracking.

A few days ago,CTurt, a long-time game console hacker, has published what he calls a permanent vulnerability in PS4 and PS5 consoles, which he believes is called & LDquo; Mast1c0re” Can't be fixed.

In brief, the vulnerability exploits JIT compilation errors used to run certain PS2 game emulators on PS4 and PS5, giving the emulator special privileges to overwrite the PS4 code before executing it at the application level.

In fact, CTurt disclosed the flaw to SONY a year ago, but he stressed that SONY did not fix it, or could not fix it.

The hackers stressed that as long as the PS4 had a mechanism to run PS2 games (digital or compact disc), the vulnerability would exist, and that it was the design mechanism that dictated it.

A similar bug appeared on Nintendo's eShop, which has since removed all 3DS games. However, as of press time, there are still PS2 games available for download on PSN.

As for cracking, CTurt said that Mast1c0re can do enough things, such as running pirated PS4 games, but to achieve a perfect cracking, it still needs the support of kernel vulnerabilities. However, as SONY continues to issue new firmware, finding kernel vulnerabilities becomes more and more difficult.