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    CVE-2023-20585

    Insufficient checks of the RMP on host buffer access in IOMMU may allow an attacker with privileges and a compromised hypervisor to trigger an out of bounds condition without RMP checks, resulting in a potential loss of confidential guest integrity.

    Published:Apr 16, 2026
    Last Modified:Apr 20, 2026
    EPS:Apr 16, 2026
    EPSS Score:0.00018
    CVSS Score:5.6

    Affected Products

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

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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