Apple has finally fixed an "unpatched" bug in the latest iOS update that had left its most up-to-date iPhones easy to hacking risk.

The new update "iOS 12.4.1" introduces a fix for vulnerability in which, Apple shows:

"A malicious application may be able to execute arbitrary code with system privileges".

Apple also notes:

We would like to acknowledge @Pwn20wnd for their assistance

A security researcher who has the name "Pwn20wnd" published a jailbreak for the earlier iOS 12.4 update.

Apple allegedly unpatched a bug in the recent iOS 12.4 update, it corrected in the previous iOS 12.3 update - leaving its phones susceptible to cybercrime.

Jailbreaking an iPhone allows individuals to customize their iOS devices and operate applications that are not supported. Apple's iOS platform never enables unsupported applications, making its phones super safe.

All iPhones operating iOS 12.4 could be jailbroken due to the unpatched bug. Several iPhone consumers tweeted that the "jailbreak" was successful.

Apple has lately announced that it will pay up to $1 million (approximately Rs. 7.2 crores) for security researchers to find flaws and vulnerabilities such as part of its bug bounty programme.

The announcement was made by Ivan Krstic, Head of security engineering and architecture at Apple, during the annual Black Hat security conference in Las Vegas.