Gigabyte UEFI Genericcomponentsmmentry vulnerabilities

2 vulnerabilities

Known vulnerabilities in Gigabyte UEFI Genericcomponentsmmentry, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

8.2CVE-2025-7027gigabyteuefi-genericcomponentsmmentry
EPSS score
0.23%
A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control both the read and write addresses used by the CommandRcx1 function. The write target is derived from an unvalidated UEFI NVRAM variable (SetupXtuBufferAddress), while the write content is read from an attacker-controlled pointer based on the RBX register. This dual-pointer dereference enables arbitrary memory writes within System Management RAM (SMRAM), leading to potential SMM privilege escalation and firmware compromise.8.2CVE-2025-7026gigabyteuefi-genericcomponentsmmentry
EPSS score
0.23%
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.