Cybersecurity firm Eclypsium has discovered a backdoor in Gigabyte’s firmware that puts 271 different motherboards at risk. These include models with Intel and AMD chipsets from the last several years, all the way up to today’s Z790 and X670 SKUs. The vulnerability resides in a small updater program that Gigabyte employs to ensure that the motherboard’s firmware is always current. Apparently, it’s doing so via an unsecured implementation.