CVE-2025-52536

State: Published
Severity: 6.7 Medium
Published: Feb 10, 2026
Updated: Feb 10, 2026
Reserved: Jun 17, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	6.7 Medium	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	AMD

Weaknesses

CWE-1231 Improper Prevention of Lock Bit Modification

Affected Products

Product	Versions
AMD EPYC™ 9004 Series ProcessorsAMD	GenoaPI 1.0.0.GNot affected
AMD EPYC™ 7003 Series ProcessorsAMD	MilanPI 1.0.0.HNot affected
AMD EPYC™ 9005 Series ProcessorsAMD	TurinPI 1.0.0.5Not affected
AMD EPYC™ 8004 Series ProcessorsAMD	GenoaPI 1.0.0.GNot affected
AMD EPYC™ Embedded 7003 Series ProcessorsAMD	EmbMilanPI-SP3 v9 1.0.0.CNot affected
AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa")AMD	EmbGenoaPI-SP5 1.0.0.BNot affected
AMD EPYC™ Embedded 9005 Series ProcessorsAMD	EmbTurinPI-SP5_1.0.0.1Not affected
AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo")AMD	EmbGenoaPI-SP5 1.0.0.BNot affected
AMD EPYC™ Embedded 8004 Series ProcessorsAMD	EmbGenoaPI-SP5 1.0.0.BNot affected

References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3023.html

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