Vulnerability Monitor

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CVE-2025-7026

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.

Published

2025-07-11T16:15:26.897

Last Modified

2025-07-15T13:14:49.980

Status

Awaiting Analysis

Source

[email protected]

Severity

CVSSv3.1: 8.2 (HIGH)

Weaknesses

-

Affected Vendors & Products

-

References