Local Privilege Escalation Vulnerability in Gigabyte Software SMI Handler
CVE-2025-7029

8.2HIGH

Key Information:

Vendor

Gigabyte

Status
Uefi-overclocksmihandler
Vendor
CVE Published:
11 July 2025

What is CVE-2025-7029?

A vulnerability in Gigabyte's Software SMI handler allows local attackers to manipulate the RBX register, which is critical for accessing pointers utilized in power and thermal configuration logic. This exploitation occurs due to insufficient validation of buffers before executing structured memory writes, making it possible for attackers to corrupt SMRAM. The flaw could potentially lead to unauthorized privilege escalation within the System Management Mode (SMM), compromising overall system security.

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Affected Version(s)

UEFI-OverClockSmiHandler 1.0.0

References

https://www.gigabyte.com/Support/Security
https://www.binarly.io/advisories/brly-dva-2025-011
https://kb.cert.org/vuls/id/746790

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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