# CVE-2025-52536

## Summary

- **CVE ID:** CVE-2025-52536
- **Severity:** MEDIUM
- **CVSS Score:** 6.7 (CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-1231
- **Published:** Feb 10, 2026
- **Last Modified:** Mar 13, 2026

## Description

Improper Prevention of Lock Bit Modification in SEV firmware could allow a privileged attacker to downgrade firmware potentially resulting in a loss of integrity.

## Affected Products

- AMD — AMD EPYC™ 9004 Series Processors (GenoaPI 1.0.0.G)
- AMD — AMD EPYC™ 7003 Series Processors (MilanPI 1.0.0.H)
- AMD — AMD EPYC™ 9005 Series Processors (TurinPI 1.0.0.5)
- AMD — AMD EPYC™ 8004 Series Processors (GenoaPI 1.0.0.G)
- AMD — AMD EPYC™ Embedded 7003 Series Processors (EmbMilanPI-SP3 v9 1.0.0.C)
- AMD — AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa") (EmbGenoaPI-SP5 1.0.0.B)
- AMD — AMD EPYC™ Embedded 9005 Series Processors (EmbTurinPI-SP5_1.0.0.1)
- AMD — AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo") (EmbGenoaPI-SP5 1.0.0.B)
- AMD — AMD EPYC™ Embedded 8004 Series Processors (EmbGenoaPI-SP5 1.0.0.B)

## References

- [CNA](https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3023.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.14%
- **EPSS Percentile:** 3.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._