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

Attack Vector Physical

Attack Complexity High

Privileges Required High

Attack Requirements Present

User Interaction Active

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00023.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

No data.

No data.

No data.

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Vendors Products
References
Link Providers
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3030.html cve-icon cve-icon
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4017.html cve-icon cve-icon
History

Tue, 19 May 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 15 May 2026 04:15:00 +0000

Type Values Removed Values Added
Title SMM Callout Handler Enables Execution of Untrusted Code

Fri, 15 May 2026 02:00:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-1072
References
Metrics cvssV4_0

{'score': 5.4, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: AMD

Published:

Updated: 2026-05-19T21:01:36.151Z

Reserved: 2025-12-06T13:53:51.228Z

Link: CVE-2026-0438

cve-icon Vulnrichment

Updated: 2026-05-15T13:29:46.380Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-15T02:16:23.637

Modified: 2026-05-15T14:10:17.083

Link: CVE-2026-0438

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-15T04:00:12Z