CVE-2025-0040

Physical Access Enables Reading and Writing of Debug Registers on AMD Ryzen Processors

Published May 15, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Amd
Amd ryzen 7040 Series Mobile Processors With Radeon Graphics
Amd ryzen 8000 Series Desktop Processors
Amd ryzen 8040 Series Mobile Processors With Radeon Graphics
Amd ryzen Embedded 8000 Series Processors
Vendors & Products Amd
Amd ryzen 7040 Series Mobile Processors With Radeon Graphics
Amd ryzen 8000 Series Desktop Processors
Amd ryzen 8040 Series Mobile Processors With Radeon Graphics
Amd ryzen Embedded 8000 Series Processors
Type Values Removed Values Added
Metrics ssvc

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

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