The UEFI firmware implementation in some motherboards from ASUS, Gigabyte, MSI, and ASRock is vulnerable to direct memory access (DMA) attacks that can bypass early-boot memory protections. [...]

https://www.bleepingcomputer.com/news/security/new-uefi-flaw-enables-pre-boot-attacks-on-motherboards-from-gigabyte-msi-asus-asrock/