CVE-2026-0438

MediumCVSS 5.4/10Last modified Oct 26, 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.

Metrics

CVSS 4.0 5.4/10CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

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

References

Timeline

Published
May 15, 2026
Last modified
Oct 26, 2026
NVD status
Awaiting Analysis

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CVE-2026-0438: Medium severity, CVSS 5.4 | Vulnix