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    CVE-2025-62864

    Ampere AmpereOne AC03 devices before 3.5.9.3, AmpereOne AC04 devices before 4.4.5.2, and AmpereOne M devices before 5.4.5.1 allow an incorrectly formed SMC call to UEFI-MM MMCommunicate service that could result in an out-of-bounds write within the UEFI-MM Secure Partition context.

    Published:Dec 16, 2025
    Last Modified:Jan 13, 2026
    EPS:Dec 16, 2025
    EPSS Score:0.00056
    CVSS Score:9.8

    Affected Products

    Vendor
    Amperecomputing
    Product
    Ampereone
    Vendor
    Amperecomputing
    Product
    Ampereone A128-34x
    Vendor
    Amperecomputing
    Product
    Ampereone A128-34x Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A144-24x
    Vendor
    Amperecomputing
    Product
    Ampereone A144-24x Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A144-26m
    Vendor
    Amperecomputing
    Product
    Ampereone A144-26m Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A144-27x
    Vendor
    Amperecomputing
    Product
    Ampereone A144-27x Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A144-33m
    Vendor
    Amperecomputing
    Product
    Ampereone A144-33m Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A160-28m
    Vendor
    Amperecomputing
    Product
    Ampereone A160-28m Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A160-28x
    Vendor
    Amperecomputing
    Product
    Ampereone A160-28x Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A192-26m
    Vendor
    Amperecomputing
    Product
    Ampereone A192-26m Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A192-26x
    Vendor
    Amperecomputing
    Product
    Ampereone A192-26x Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A192-32m
    Vendor
    Amperecomputing
    Product
    Ampereone A192-32m Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A192-32x
    Vendor
    Amperecomputing
    Product
    Ampereone A192-32x Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A96-36m
    Vendor
    Amperecomputing
    Product
    Ampereone A96-36m Firmware
    Vendor
    Amperecomputing
    Product
    Ampereone A96-36x
    Vendor
    Amperecomputing
    Product
    Ampereone A96-36x Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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