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CVE-2025-7026

Published Unknown
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Expert Analysis

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CVSS Score

V3.1
0.0
/10
Not Available
Base Score Metrics
Exploitability: N/A Impact: N/A

Attack Vector Metrics

Attack Vector
Not Available
Attack Complexity
Not Available
Privileges Required
Not Available
User Interaction
Not Available
Scope
Not Available

Impact Metrics

Confidentiality
Not Available
Integrity
Not Available
Availability
Not Available

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

EU Vulnerability Database

Monitored by ENISA for EU cybersecurity

EU Coordination

EU Coordinated

Exploitation Status

No Known Exploitation

EUVD ID

View on ENISA

ENISA Analysis

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.

Affected Products (ENISA)

gigabyte
uefi-genericcomponentsmmentry

ENISA Scoring

CVSS Score (3.1)

8.2
/10
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS Score

0.010
probability

ENISA References

https://www.gigabyte.com/Support/Security
https://www.binarly.io/advisories/brly-dva-2025-008
https://kb.cert.org/vuls/id/746790

Data provided by ENISA EU Vulnerability Database. Last updated: July 12, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-g884-34r9-cwxq

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-7026
WEB https://kb.cert.org/vuls/id/746790
WEB https://www.binarly.io/advisories/brly-dva-2025-008
WEB https://www.gigabyte.com/Support/Security

Advisory provided by GitHub Security Advisory Database. Published: July 11, 2025, Modified: July 11, 2025

Published: Unknown
Last Modified: Unknown
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