What Is Apple’s Response?
The good news is that Apple is already on top of it, with a series of fixes released earlier this week in the form of macOS 10.14.5 for those computers that support Mojave, and specific security updates for High Sierra and Sierra for those Macs that are stuck on older macOS versions.
Apple has also published a support document outlining the details of the vulnerability, along with some general safe computing recommendations to reduce the possibility of being impacted by these types of exploits in general, such as only installing apps from the App Store.
Unfortunately, Apple does provide a list of older Mac models that are unsupported, “due to a lack of microcode updates from Intel.” All of the listed models, however, are from 2010 and earlier, which in theory shouldn’t be impacted by the flaw in the first place. We suspect Apple is just being thorough here.