Vulnerability in Gigabyte Uefi-Genericcomponentsmmentry
CVE-2025-7026
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.
EPSS: 0.002 (10.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Gigabyte Uefi-genericcomponentsmmentry — versions 1.0.0
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-7026?
- CVE-2025-7026 is a high-severity vulnerability in Gigabyte Uefi-Genericcomponentsmmentry, classified under CWE-822 UNTRUSTED POINTER DEREFERENCE. CVSS score: 8.2/10. Published 2025-07-11.
- How severe is CVE-2025-7026?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2025-7026 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.