CVE-2025-7027
ASUS Firmware SMM Privilege Escalation Vulnerability
Description
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.
INFO
Published Date :
July 11, 2025, 4:15 p.m.
Last Modified :
July 15, 2025, 3:15 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-7027
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update the system firmware to the latest available version.
- Ensure UEFI NVRAM variables are properly validated.
- Sanitize input pointers to prevent arbitrary memory writes.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-7027.
| URL | Resource |
|---|---|
| https://kb.cert.org/vuls/id/746790 | |
| https://www.binarly.io/advisories/brly-2025-009 | |
| https://www.gigabyte.com/Support/Security |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-7027 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-7027
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-7027 vulnerability anywhere in the article.
-
CybersecurityNews
Gigabyte UEFI Firmware Vulnerability Let Attackers Execute Arbitrary Code in the SMM Environment
Critical security vulnerabilities have been discovered in Gigabyte UEFI firmware that could allow attackers to execute arbitrary code in System Management Mode (SMM), one of the most privileged execut ... Read more
-
BleepingComputer
Gigabyte motherboards vulnerable to UEFI malware bypassing Secure Boot
Dozens of Gigabyte motherboard models run on UEFI firmware vulnerable to security issues that allow planting bootkit malware that is invisible to the operating system and can survive reinstalls. The v ... Read more
The following table lists the changes that have been made to the
CVE-2025-7027 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 15, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H -
New CVE Received by [email protected]
Jul. 11, 2025
Action Type Old Value New Value Added Description 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. Added Reference https://kb.cert.org/vuls/id/746790 Added Reference https://www.binarly.io/advisories/brly-2025-009 Added Reference https://www.gigabyte.com/Support/Security