Memory Mapped I/O Stale Data (MMIO) information leakage vulnerabilities in Intel CPUs have been fixed by Microsoft with out-of-band security patches. Memory Mapped I/O Stale Data (MMIO) information leakage vulnerabilities in Intel CPUs have been fixed by Microsoft with out-of-band security patches.
On June 14th, 2022, Intel released a security advisory describing the Mapped I/O side-channel vulnerabilities, warning that if exploited, programmes operating in one virtual machine could access data from another virtual machine.