The UX360CA BIOS on ASUS laptops versions up to 303 is susceptible to a severe flaw that enables an attacker with ring 0 privileges to overwrite almost any physical memory location, including System Management RAM (SMRAM). This exploitation facilitates the execution of arbitrary code within the System Management Mode (SMM), potentially allowing malicious activities that compromise the integrity and security of the system.
https://securityvulnerability.io/vulner ... 2021-26943