Detections
Analytics
CVE-2025-7026
high
Description
A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control the RBX register, which is used as an unchecked pointer in the CommandRcx0 function. If the contents at RBX match certain expected values (e.g., '$DB$' or '2DB$'), the function performs arbitrary writes to System Management RAM (SMRAM), leading to potential privilege escalation to System Management Mode (SMM) and persistent firmware compromise.
References
https://www.helpnetsecurity.com/2025/07/15/gigabyte-uefi-vulnerabilities-bootkit-installation/
https://www.databreachtoday.com/ghost-in-machine-exploits-spotted-in-gigabyte-firmware-a-28973
https://www.securityweek.com/flaws-in-gigabyte-firmware-allow-security-bypass-backdoor-deployment/