What’s Vulnerable › Vulnerabilities

CVE-2026-0438

• Severity: medium (CVSS 5.4 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-15 · updated 2026-10-26
• Weakness: CWE-1072

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.

Affected products

• AMD EPYC™ 4004 Series Processors: all versions
• AMD EPYC™ 4005 Series Processors: all versions
• AMD Ryzen™ 7000 Series Desktop Processors: all versions
• AMD Ryzen™ 7000 Series Desktop Processors (formerly codenamed "Raphael"): all versions
• AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 8000 Series Desktop Processors: all versions
• AMD Ryzen™ 8000 Series Desktop Processors (formerly codenamed "Phoenix"): all versions
• AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 9000 Series Desktop Processors: all versions
• AMD Ryzen™ 9000 Series Desktop Processors (formerly codenamed "Granite Ridge"): all versions
• AMD Ryzen™ 9000HX Series Processors: all versions
• AMD Ryzen™ AI 300 Series Processors: all versions
• AMD Ryzen™ AI Max 300 Series Processors: all versions
• AMD Ryzen™ Embedded 7000 Series Processors: all versions
• AMD Ryzen™ Embedded 8000 Series Processors: all versions
• AMD Ryzen™ Embedded 9000 Series Processors: all versions
• AMD Ryzen™ Threadripper™ 7000 Processors: all versions
• AMD Ryzen™ Threadripper™ 9000 Processors: all versions
• AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors: all versions
• AMD Ryzen™ Threadripper™ PRO 9000 WX-Series Processors: all versions
• AMD Ryzen™ Z1 Series Processors: all versions
• AMD Ryzen™ Z2 Series Processors: all versions
• AMD Ryzen™ Z2 Series Processors Extreme: all versions

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

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