SA-00086 is related to the vulnerabilities found in the Intel Management Engine. Updated firmware for the Intel Management Engine, delivered via a BIOS update for the motherboard, is necessary.
SA-00088 is related to the Meltdown and Spectre vulnerabilities found in the Intel processors. Updated processor microcode, delivered via a BIOS update for the motherboard as well as by various Operating Systems updates, is necessary.
In both cases, the BIOS updates must be generated by the motherboard vendor. Contact your motherboard vendor for information on the delivery of the BIOS update(s) in question.