CVE-2025-7026
High
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.
SeverityHigh
CVSS8.2
Exploit probability—
ProductUEFI-GenericComponentSmmEntry
PublishedJul 11, 2025
First seenJul 11, 2025
Weakness typeCWE-822CWE-822
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| GIGABYTE UEFI-GenericComponentSmmEntry | 1.0.0 | — |
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