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    CVE-2025-61972

    Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to gain arbitrary System Management Network (SMN) access, potentially resulting in arbitrary code execution in AMD Secure Processor (ASP) and loss of the SEV-SNP guest's confidentiality and integrity.

    Published:May 13, 2026
    Last Modified:May 13, 2026
    EPS:May 13, 2026
    EPSS Score:0.00013
    CVSS Score:8.5

    Affected Products

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

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2025-61971 (CVSS 5.9) — Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to modify MMIO ro…
    CVE-2025-54502 (CVSS 7.1) — Incorrect use of boot service in the AMD Platform Configuration Blob (APCB) SMM driver could allow a privilege…
    CVE-2025-54510 (CVSS 5.9) — A missing lock verification in AMD Secure Processor (ASP) firmware may permit a locally authenticated attacker…
    CVE-2023-31364 (CVSS 8.3) — Improper handling of direct memory writes in the input-output memory management unit could allow a malicious g…
    CVE-2025-0031 (CVSS 4.6) — A use after free in the SEV firmware could allow a malicous hypervisor to activate a migrated guest with the S…
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    CVE-2025-48509 (CVSS 1.8) — Missing Checks in certain functions related to RMP initialization can allow a local admin privileged attacker …
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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