SEV-SNP Routing Misconfiguration
Summary
A privileged attacker may alter Memory Mapped I/O (MMIO) routing, potentially compromising SEV-SNP integrity on some Zen 5-based products.
CVE Details
Refer to Glossary for explanation of terms
CVE |
CVE Description |
CVSS Score |
CVE-2025-54510 |
A missing lock verification in AMD Secure Processor (ASP) firmware may permit a locally authenticated attacker with administrative privileges to alter MMIO routing on some Zen 5-based products, potentially compromising guest system integrity. |
5.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N |
Affected Products and Mitigation
AMD released or plans to release mitigations on the dates listed below. Please contact your OEM for the BIOS update specific to your product(s).
AMD EPYC™ Processors
| Product | Platform Initialization (PI) Mitigation | Microcode Mitigation | SEV FW Mitigation | TCB Value for SEV Attestation | Release Date |
| AMD EPYC™ 7003 Series Processors | MilanPI 1.0.0.J | N/A | N/A | TCB[SNP]>=0x1D mitigation bit = 4 | 2025-12-02 |
| AMD EPYC™ 8004 Series Processors | GenoaPI 1.0.0.H | N/A | N/A | TCB[SNP]>=0x1C | 2025-12-15 |
| AMD EPYC™ 9004 Series Processors | GenoaPI 1.0.0.H | N/A | N/A | TCB[SNP]>=0x1C | 2025-12-15 |
| AMD EPYC™ 9005 Series Processors | TurinPI 1.0.0.8 | N/A | N/A | TCB[SNP]>=0x5 | 2025-11-26 |
SEV Table
| CVE ID | SEV | SEV-ES | SEV-SNP |
| CVE-2025-54510 | N | N | Y |
AMD EPYC™ Embedded Processors
| Product | Mitigation | Release Date |
| AMD EPYC™ Embedded 7003 Series Processors | EmbMilanPI-SP3 1.0.0.D | 2026-01-02 |
| AMD EPYC™ Embedded 8004 Series Processors | EmbGenoaPI-SP5 1.0.0.D | 2026-02-02 |
| AMD EPYC™ Embedded 9004 Series Processors | EmbGenoaPI-SP5 1.0.0.D | 2026-02-02 |
| AMD EPYC™ Embedded 9005 Series Processors | Version TBD | Target release April 2026 |
Acknowledgement
AMD thanks Benedict Schluter, Christoph Wech, and Shweta Shinde of ETH Zurich for reporting this issue and participating in coordinated vulnerability disclosure.
Revisions
| Revision Date | Description |
| 2026-04-14 | Initial publication |
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