# CVE-2026-0438

## Summary

- **CVE ID:** CVE-2026-0438
- **Severity:** MEDIUM
- **CVSS Score:** 5.4 (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)
- **CWE:** CWE-1072
- **Published:** May 15, 2026
- **Last Modified:** May 19, 2026

## 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 — AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics (PhoenixPI-FP8-FP7_1.2.0.0f)
- AMD — AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics (DragonRangeFL1PI 1.0.0.3k)
- AMD — AMD Ryzen™ 7000 Series Desktop Processors (ComboAM5PI 1.0.0.d)
- AMD — AMD Ryzen™ 9000HX Series Processors (FireRangeFL1PI 1.0.0.0d)
- AMD — AMD Ryzen™ AI 300 Series Processors (StrixKrackanPI-FP8_1.1.0.0e)
- AMD — AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors (StormPeakPI-SP6 1.0.0.1m)
- AMD — AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors (StormPeakPI-SP6_1.1.0.0k)
- AMD — AMD Ryzen™ 7000 Series Desktop Processors (ComboAM5PI 1.1.0.3f)
- AMD — AMD Ryzen™ 7000 Series Desktop Processors (ComboAM5PI_1.2.0.3i)
- AMD — AMD Ryzen™ 8000 Series Desktop Processors (ComboAM5PI 1.1.0.3f)
- AMD — AMD Ryzen™ 8000 Series Desktop Processors (ComboAM5PI_1.2.0.3i)
- AMD — AMD Ryzen™ 9000 Series Desktop Processors (ComboAM5PI_1.2.0.3i)
- AMD — AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics (PhoenixPI-FP8-FP7_1.2.0.0f)
- AMD — AMD Ryzen™ AI Max 300 Series Processors (StrixHaloPI-FP11_1.0.0.2a)
- AMD — AMD Ryzen™ Z1 Series Processors (PhoenixPI-FP8-FP7_1.2.0.0f)
- AMD — AMD Ryzen™ Z2 Series Processors Extreme (StrixKrackanPI-FP8_1.1.0.2d)
- AMD — AMD Ryzen™ Z2 Series Processors (PhoenixPI-FP8-FP7_1.2.0.0f)
- AMD — AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors (ShimadaPeakPI-SP6 1.0.0.1c)
- AMD — AMD Ryzen™ Threadripper™ 7000  Processors (ShimadaPeakPI-SP6 1.0.0.1c)
- AMD — Not public (StrixKrackanPI-FP8_1.1.0.2d)
- AMD — AMD Ryzen™ Threadripper™ 9000 Processors (ShimadaPeakPI-SP6 1.0.0.1c)
- AMD — AMD Ryzen™ Threadripper™ PRO 9000 WX-Series Processors (ShimadaPeakPI-SP6 1.0.0.1c)
- AMD — AMD Ryzen™ 7000 Series Desktop Processors (formerly codenamed "Raphael") (ComboAM5PI_1.3.0.0)
- AMD — AMD Ryzen™ 8000 Series Desktop Processors (formerly codenamed "Phoenix") (ComboAM5PI_1.3.0.0)
- AMD — AMD Ryzen™ 9000 Series Desktop Processors (formerly codenamed "Granite Ridge") (ComboAM5PI_1.3.0.0)
- AMD — AMD Ryzen™ Embedded 9000 Series Processors (EmbeddedAM5PI 1.0.0.5)
- AMD — AMD Ryzen™ Embedded 8000 Series Processors (EmbeddedPhoenixPI-FP7r2_1.0.0.4)
- AMD — AMD Ryzen™ Embedded 7000 Series Processors (EmbeddedAM5PI 1.0.0.5)
- AMD — AMD EPYC™ 4004 Series Processors (ComboAM5PI 1.0.0.d / ComboAM5PI 1.1.0.3f / ComboAM5PI_1.2.0.3i)
- AMD — AMD EPYC™ 4005 Series Processors (ComboAM5PI_1.2.0.3i)

## References

- [CNA](https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3030.html)
- [CNA](https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4017.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.14%
- **EPSS Percentile:** 3.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._