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    CVE-2021-26409

    Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.

    Published:Jan 10, 2023
    Last Modified:Apr 9, 2025
    EPS:Jan 10, 2023
    EPSS Score:0.00072
    CVSS Score:7.8

    Affected Products

    Vendor
    Amd
    Product
    Milanpi
    Vendor
    Amd
    Product
    Milanpi Firmware

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2023-20519 (CVSS 3.3) — A Use-After-Free vulnerability in the management of an SNP guest context page may allow a malicious hypervisor…
    CVE-2023-20522 (CVSS 7.5) — Insufficient input validation in ASP may allow an attacker with a malicious BIOS to potentially cause a denial…
    CVE-2021-46791 (CVSS 5.5) — Insufficient input validation during parsing of the System Management Mode (SMM) binary may allow a maliciousl…
    CVE-2021-46779 (CVSS 7.1) — Insufficient input validation in SVC_ECC_PRIMITIVE system call in a compromised user application or ABL may al…
    CVE-2021-46768 (CVSS 5.5) — Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads with…
    CVE-2021-46767 (CVSS 6.1) — Insufficient input validation in the ASP may allow an attacker with physical access, unauthorized write access…

    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