A microcode_ctl security update has been released for CentOS 7.

CentOS-announce: CESA-2020:2432 Moderate CentOS 7 microcode_ctl Security Update

CentOS Errata and Security Advisory 2020:2432 Moderate

Upstream details at :   https://access.redhat.com/errata/RHSA-2020:2432

The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )

x86_64:
e60f84fe58d8f960f14241fc1c21ad0053213bad8ba294fc3c5f727d37076e4c microcode_ctl-2.1-61.6.el7_8.x86_64.rpm

Source:
42a0ea626d8554d7d25af8a383010f11fd791f7689f8943c7b97646db5550acc microcode_ctl-2.1-61.6.el7_8.src.rpm