CVE-2026-0438

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.

Score

CVSS 4.0 5.4 Medium

Status

Awaiting Analysis - psirt@amd.com

Published

2026-05-15

Last modified

2026-10-26

Weaknesses

CWE-1072

Affected products

• Amd Epyc 4004 Series Processors (Amd)
• Amd Epyc 4005 Series Processors (Amd)
• Amd Ryzen 7000 Series Desktop Processors (Amd)
• Amd Ryzen 7000 Series Desktop Processors Formerly Codenamed Raphael (Amd)
• Amd Ryzen 7040 Series Mobile Processors With Radeon Graphics (Amd)
• Amd Ryzen 7045 Series Mobile Processors With Radeon Graphics (Amd)
• Amd Ryzen 8000 Series Desktop Processors (Amd)
• Amd Ryzen 8000 Series Desktop Processors Formerly Codenamed Phoenix (Amd)
• Amd Ryzen 8040 Series Mobile Processors With Radeon Graphics (Amd)
• Amd Ryzen 9000 Series Desktop Processors (Amd)
• Amd Ryzen 9000 Series Desktop Processors Formerly Codenamed Granite Ridge (Amd)
• Amd Ryzen 9000hx Series Processors (Amd)
• Amd Ryzen Ai 300 Series Processors (Amd)
• Amd Ryzen Ai Max 300 Series Processors (Amd)
• Amd Ryzen Embedded 7000 Series Processors (Amd)
• Amd Ryzen Embedded 8000 Series Processors (Amd)
• Amd Ryzen Embedded 9000 Series Processors (Amd)
• Amd Ryzen Threadripper 7000 Processors (Amd)
• Amd Ryzen Threadripper 9000 Processors (Amd)
• Amd Ryzen Threadripper Pro 7000 Wx-series Processors (Amd)
• Amd Ryzen Threadripper Pro 9000 Wx-series Processors (Amd)
• Amd Ryzen Z1 Series Processors (Amd)
• Amd Ryzen Z2 Series Processors (Amd)
• Amd Ryzen Z2 Series Processors Extreme (Amd)

References

• https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3030.html
• https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4017.html