This could present a particular problem for owners of older hardware that doesn't support macOS High Sierra.

If left unpatched, the bug allows normal user programs, such as database applications and JavaScript in web browsers, to distinguish some of the layout or contents of protected kernel memory areas of the chips. The vulnerability allegedly affects all systems running Intel x86 chips and is present across all popular operating systems, including Windows, Linux, and macOS, but is currently under embargo, meaning the full details of the bug are yet to be officially announced. Nevertheless, the chip design flaw shouldn't be taken lightly.

It added that at its last WWDC in 2017, developers were warned that macOS High Sierra 'would be the last version of macOS to run 32-bit apps without compromise'. When a 32-bit app is started users will see this message: 'This app needs to be updated by its developer to improve compatibility.' There will also be a 'learn more' link that takes them to an Apple support page with more information.Īccording to a support document by Apple, it began the transition to 64-bit hardware and software technology for Mac over a decade ago, and is working with developers to transition their apps to 64-bit. The alert tells users that their 32-bit software will soon stop working. : 32-bit iOS apps will stop working, says AppleĪpple is warning users that their 32-bit applications will stop working soonĪs of midnight, last night, users of MacOS 10.13.4 will see an alert whenever they launch 32-bit software for the first time when running the current MacOS version.

High sierra update