Secure Debug Unlock (SDU) Vulnerability
Summary
An improper signature validation vulnerability in the Secure Debug Unlock (SDU) authorization mechanism was identified internally.
SDU authorization relies on cryptographic validation using a public key provisioned in the BIOS. Insufficient validation of this key may allow it to be modified, undermining the integrity of the authorization process. An attacker with Ring 0 privileges could exploit this condition to bypass debug access protections, potentially enabling unauthorized debug unlock capabilities and compromising platform security.
CVE Details
Refer to Glossary for explanation of terms
CVE |
CVE Description |
CVSS Base Score |
CVE-2025-0008 |
Insufficient verification of data authenticity may allow a local attacker to bypass Secure Debug Unlock (SDU), potentially resulting in unauthorized debug access. |
8.4 |
Specific CVSS scores may change subject to your implementation. We encourage you to calculate CVSS scores independently for your system.
Affected Products and Mitigation
AMD recommends updating to the mitigated version indicated below.
*Note: Products believed to not be affected by the listed CVEs are not included.
AMD EPYC™ Series Processors
Product |
CVE ID |
Platform Initialization (PI) Mitigation |
Mitigation Release Date |
AMD EPYC™ 7001 Series Processors |
CVE-2025-0008 |
NaplesPI-SP3_1.0.0.T |
2026-04-06 |
AMD EPYC™ 7002 Series Processors |
CVE-2025-0008 |
RomePI-SP3_1.0.0.Q |
2026-04-27 |
AMD EPYC™ 7003 Series Processors |
CVE-2025-0008 |
MilanPI 1.0.0.G |
2025-01-29 |
AMD EPYC™ Embedded Series Processors
Product |
CVE ID |
Mitigation |
Mitigation Release Date |
AMD EPYC™ Embedded 3000 Series Processors |
CVE-2025-0008 |
SnowyOwl_SP4_SP4r2.1.1.0.I |
2026-06-30 |
AMD EPYC™ Embedded 7002 Series Processors |
CVE-2025-0008 |
EmbeddedRomePI-SP3 1.0.0.G |
2026-06-30 |
AMD EPYC™ Embedded 7003 Series Processors |
CVE-2025-0008 |
EmbMilanPI-SP3 1.0.0.B |
2025-04-30 |
Revisions
| Revision Date | Description |
| 2026-11-10 | Initial version |
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