CVE-2026-0438

medium

Description

A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system’s confidentiality, integrity, and availability.

References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4017.html

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3030.html

Details

Source: Mitre, NVD

Published: 2026-05-15

Updated: 2026-05-15

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 5.4

Vector: CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00018