CVE-2025-7028

HIGH EPSS 8.8%

Published Jul 11, 202511mo ago · Modified Jun 17, 20261w ago

7.8 CVSS 3.1

High

Published Jul 11, 2025 11mo ago

Last Modified Jun 17, 2026 1w ago

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 Details

Base Score

7.8

Exploitability

1.8

Impact

5.9

Vector string

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

Attack Vector Local

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

8.8% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

References 4

kb.cert.org https://kb.cert.org/vuls/id/746790
binarly.io https://www.binarly.io/advisories/brly-dva-2025-010
gigabyte.com https://www.gigabyte.com/Support/Security
kb.cert.org https://www.kb.cert.org/vuls/id/746790

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.