Microsoft began deploying microcode updates to a few of Intel’s older Core, Pentium, and Celeron processor generations by Windows Update. The newest Cumulative Update packages chronicled beneath “KB4497165” apply to machines working Intel’s 4th era Core “Haswell” processors, and low-power Pentium and Celeron chips primarily based on “Apollo Lake,” “Gemini Lake,” “Valley View,” and “Cherry View” microarchitectures.
The microcode replace supplies firmware-level hardening towards 4 main variants of the MDS class of safety vulnerabilities, specifically CVE-2019-11091 (MDS Uncacheable Memory), CVE-2018-12126 (Microarchitectural Store Buffer Data Sampling), CVE-2018-12127 (Microarchitectural Load Port Data Sampling), and CVE-2018-12130 (Microarchitectural Fill Buffer Data Sampling).
