Meltdown and Spectre are what are known as exploits, vulnerabilities or weaknesses, even though they are being reported widely as bugs or flaws on central processing units (CPUs), the computer chips at the heart of every PC or smartphone.
The issues - Spectre and Meltdown - are flaws in computer chips which could, in theory, allow hackers to steal data from affected systems. Apple, has already acknowledged the potential security flaw in its MAC and iOS devices but there are no known exploits impacting customers at this time.
But it advised downloading software only from trusted sources to avoid "malicious" apps.
Apple has already pushed out "mitigations" to help defend iOS devices and Macs against Meltdown, the company said.
Intel said it had planned to have fixes available soon. "We are in the process of deploying mitigations to cloud services and have also released security updates to protect Windows customers against vulnerabilities affecting supported hardware chips from Intel, ARM, and AMD", Microsoft said in a statement to The Verge.
"Our testing with public benchmarks has shown that the changes in the December 2017 updates resulted in no measurable reduction in the performance of macOS and iOS", the company said in its blog post.