CVE-2026-0438: medium-severity vulnerability in AMD EPYC™ 4004 Series Processors
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.4epss 0.1%
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.
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
Affected products
AMD · AMD EPYC™ 4004 Series ProcessorsAMD · AMD EPYC™ 4005 Series ProcessorsAMD · AMD Ryzen™ 7000 Series Desktop ProcessorsAMD · AMD Ryzen™ 7000 Series Desktop Processors (formerly codenamed "Raphael")AMD · AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ GraphicsAMD · AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ GraphicsAMD · AMD Ryzen™ 8000 Series Desktop ProcessorsAMD · AMD Ryzen™ 8000 Series Desktop Processors (formerly codenamed "Phoenix")AMD · AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ GraphicsAMD · AMD Ryzen™ 9000HX Series ProcessorsAMD · AMD Ryzen™ 9000 Series Desktop ProcessorsAMD · AMD Ryzen™ 9000 Series Desktop Processors (formerly codenamed "Granite Ridge")AMD · AMD Ryzen™ AI 300 Series ProcessorsAMD · AMD Ryzen™ AI Max 300 Series ProcessorsAMD · AMD Ryzen™ Embedded 7000 Series ProcessorsAMD · AMD Ryzen™ Embedded 8000 Series ProcessorsAMD · AMD Ryzen™ Embedded 9000 Series ProcessorsAMD · AMD Ryzen™ Threadripper™ 7000 ProcessorsAMD · AMD Ryzen™ Threadripper™ 9000 ProcessorsAMD · AMD Ryzen™ Threadripper™ PRO 7000 WX-Series ProcessorsAMD · AMD Ryzen™ Threadripper™ PRO 9000 WX-Series ProcessorsAMD · AMD Ryzen™ Z1 Series ProcessorsAMD · AMD Ryzen™ Z2 Series ProcessorsAMD · AMD Ryzen™ Z2 Series Processors ExtremeRelated CVEs — AMD EPYC™ 4004 Series Processors
In the same product, most dangerous first.