CVE-2025-61971

State: Published
Severity: 5.9 Medium
Published: May 13, 2026
Updated: May 13, 2026
Reserved: Oct 4, 2025

Description

Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to modify MMIO routing configurations, potentially resulting in loss of SEV-SNP guest integrity.

Scores

CVSS	Score	Vector	Source
4.0	5.9 Medium	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	AMD

Weaknesses

CWE-1233 Security-Sensitive Hardware Controls with Missing Lock Bit Protection

Affected Products

Product	Versions
AMD EPYC™ 9004 Series ProcessorsAMD	GenoaPI_1.0.0.HNot affected
AMD EPYC™ 7003 Series ProcessorsAMD	MilanPI-SP3_1.0.0.JNot affected
AMD EPYC™ 9005 Series ProcessorsAMD	TurinPI_1.0.0.8Not affected
AMD EPYC™ 8004 Series ProcessorsAMD	GenoaPI_1.0.0.HNot affected
AMD EPYC™ Embedded 7003 Series ProcessorsAMD	EmbMilanPI-SP3 1.0.0.DNot affected
AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa")AMD	EmbGenoaPI-SP5 1.0.0.DNot affected
AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo")AMD	EmbGenoaPI-SP5 1.0.0.DNot affected
AMD EPYC™ Embedded 8004 Series ProcessorsAMD	EmbGenoaPI-SP5 1.0.0.DNot affected
AMD EPYC™ Embedded 9005 Series ProcessorsAMD	EmbeddedTurinPI_SP5_1004Not affected

References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3030.html

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