# CVE-2025-54509

## Summary

- **CVE ID:** CVE-2025-54509
- **Severity:** MEDIUM
- **CVSS Score:** 4 (CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N)
- **CWE:** CWE-1262
- **Published:** Jun 9, 2026
- **Last Modified:** Jul 24, 2026

## Description

Improper access control for register interface in the input-output memory management unit (IOMMU) could allow a privileged attacker to cause non-coherent accesses by the AMD secure processor (ASP) potentially resulting in loss of integrity.

## Affected Products

- AMD — AMD EPYC™ 9004 Series Processors (GenoaPI_1.0.0.H)
- AMD — AMD EPYC™ 9005 Series Processors (TurinPI_1.0.0.8)
- AMD — AMD EPYC™ 8004 Series Processors (GenoaPI_1.0.0.H)
- AMD — AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa") (EmbGenoaPI-SP5 1.0.0.D)
- AMD — AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo") (EmbGenoaPI-SP5 1.0.0.D)
- AMD — AMD EPYC™ Embedded 8004 Series Processors (EmbGenoaPI-SP5 1.0.0.D)
- AMD — AMD EPYC™ Embedded 9005 Series Processors (EmbeddedTurinPI_SP5_1004)

## References

- [CNA](https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3039.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.13%
- **EPSS Percentile:** 2.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._