The researchers said Apple Inc and Microsoft Corp had patches ready for users for desktop computers affected by Meltdown. Security researchers revealed that Meltdown has been found on Intel processors.
In recent days, cybersecurity experts have released information about design flaws in microchips produced or designed by such companies as Intel, AMD and Arm Holdings, which control nearly all the chip market.
Apple said late Thursday all its Mac and iOS devices are affected by Spectre and Meltdown.
Apple, like Microsoft, has urged users to download software only from trusted sources, such as the App Store.
"Apple added protection for Meltdown in the macOS update that was released on December 6", it said in an overview of the problems. Intel is also working on updates to help fix the problem. The federal organization says that "fully removing the vulnerability" requires replacing the hardware already embedded in millions of computing devices.
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"In addition, many operating system vendors, public cloud service providers, device manufacturers and others have indicated that they have already updated their products and services". In the meantime, criminal actors and nation states could further develop the Spectre vulnerability, making attacks easier to execute.
Intel is at the center of the problem because it supplies the processors used in numerous world's PCs. Apple said that it had released "mitigations" for its devices, which are all affected.
The focus seems to be on Intel for the most part obviously, being the biggest loser in the whole situation. This stunningly broad admission erases any ambiguity as to whether Apple's custom-designed A-series chips and more recent products were protected - they were not.
"This stops criminals accessing potentially sensitive information, however without these updates installed devices can be left open to be exploited through these recently discovered potential security flaws". Apple has released some updates to defend against Meltdown and will be releasing an update to protect against Spectre soon.
If you own a Windows-powered PC or laptop, the best thing to do right now is ensure you have the latest Windows 10 updates and BIOS updates from Dell, HP, Lenovo, or one of the many other PC makers.