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CVE-2025-7028

SMM Arbitrary Memory Access via Flash Handler with Unchecked FuncBlock Pointer

Published: Jul 11, 2025Updated: Nov 3, 2025 Sources: CVE List NVD BDU
NVD MITRE
7.8CVSSHIGH
EPSS Score
0.2%
Top 91.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A vulnerability in the Software SMI handler (SwSmiInputValue 0x20) allows a local attacker to supply a crafted pointer (FuncBlock) through RBX and RCX register values. This pointer is passed unchecked into multiple flash management functions (ReadFlash, WriteFlash, EraseFlash, and GetFlashInfo) that dereference both the structure and its nested members, such as BufAddr. This enables arbitrary read/write access to System Management RAM (SMRAM), allowing an attacker to corrupt firmware memory, exfiltrate SMRAM content via flash, or install persistent implants.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Affected Products

GA-IMB1900NGigabyte Technology Co., Ltd.Hardware Firmware
GA-IMB1900TNGigabyte Technology Co., Ltd.Hardware Firmware
GA-J1800M-D2P-INGigabyte Technology Co., Ltd.Hardware Firmware
GA-J1800M-D3PGigabyte Technology Co., Ltd.Hardware Firmware
GA-J1800N-D2PHGigabyte Technology Co., Ltd.Hardware Firmware
gigabyte technology co., ltd.commercialTWConsumer Softwareaka gigabyte
and 5 more affected products View all →

Exploitability

Official Patch Available

References

https://kb.cert.org/vuls/id/746790
kb.cert.org
https://www.binarly.io/advisories/brly-dva-2025-010
binarly.io
https://www.gigabyte.com/Support/Security
gigabyte.com
and 3 more references View all →

Timeline

Published
Jul 11, 2025
Last Updated
Nov 3, 2025

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