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.

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.002 (12.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-7026: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

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.