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    CVE-2025-61971

    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:May 13, 2026
    Last Modified:May 13, 2026
    EPS:May 13, 2026
    EPSS Score:0.00012
    CVSS Score:5.9

    Affected Products

    Vendor
    Amd
    Product
    Epyc 7003 Series Processors
    Vendor
    Amd
    Product
    Epyc 8004 Series Processors
    Vendor
    Amd
    Product
    Epyc 9004 Series Processors
    Vendor
    Amd
    Product
    Epyc 9005 Series Processors
    Vendor
    Amd
    Product
    Epyc Embedded 7003 Series Processors
    Vendor
    Amd
    Product
    Epyc Embedded 8004 Series Processors
    Vendor
    Amd
    Product
    Epyc Embedded 9004 Series Processors
    Vendor
    Amd
    Product
    Epyc Embedded 9005 Series Processors

    Exploits

    No exploit reference

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High