Improper access control between the Joint Test Action Group (JTAG) and Advanced Extensible Interface (AXI) could allow an attacker with physical access to read or overwrite the contents of cross-chip debug (XCD) registers potentially resulting in loss of data integrity or confidentiality.

Attack Vector Physical

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

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 0.00021.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
AMD AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics affected
Version Status Constraints
PhoenixPI-FP8-FP7_1.2.0.B unaffected —
AMD AMD Ryzen™ 8000 Series Desktop Processors affected
Version Status Constraints
ComboAM5PI 1.2.0.3d unaffected —
ComboAM5PI 1.1.0.3d unaffected —
AMD AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics affected
Version Status Constraints
PhoenixPI-FP8-FP7_1.2.0.B unaffected —
AMD AMD Ryzen™ Embedded 8000 Series Processors affected
Version Status Constraints
EmbeddedPhoenixPI-FP7r2_1.0.0.2 unaffected —

No data.

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4017.html cve-icon cve-icon
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6027.html cve-icon cve-icon
History

Fri, 15 May 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Fri, 15 May 2026 04:45:00 +0000

Type Values Removed Values Added
Title Physical Access Enables Reading and Writing of Debug Registers on AMD Ryzen Processors

Fri, 15 May 2026 03:00:00 +0000

Type Values Removed Values Added
Description Improper access control between the Joint Test Action Group (JTAG) and Advanced Extensible Interface (AXI) could allow an attacker with physical access to read or overwrite the contents of cross-chip debug (XCD) registers potentially resulting in loss of data integrity or confidentiality.
Weaknesses CWE-284
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:P/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMD

Published:

Updated: 2026-05-15T13:22:52.097Z

Reserved: 2024-11-21T16:18:07.633Z

Link: CVE-2025-0040

cve-icon Vulnrichment

Updated: 2026-05-15T13:22:48.323Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-15T03:16:21.210

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

Link: CVE-2025-0040

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-15T04:30:36Z

Weaknesses