CVE-2025-61971

No fix known EPSS <1%CVSS 5.9

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.

Published 2026-05-13 · CVE record · OSV

Products: AMD EPYC™ 9004 Series Processors, AMD EPYC™ 7003 Series Processors, AMD EPYC™ 9005 Series Processors, AMD EPYC™ 8004 Series Processors, AMD EPYC™ Embedded 7003 Series Processors, AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa"), AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo"), AMD EPYC™ Embedded 8004 Series Processors, AMD EPYC™ Embedded 9005 Series Processors