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    CVE-2022-28806

    An issue was discovered on certain Fujitsu LIEFBOOK devices (A3510, U9310, U7511/U7411/U7311, U9311, E5510/E5410, U7510/U7410/U7310, E459/E449) with BIOS versions before v1.09 (A3510), v2.17 (U9310), v2.30 (U7511/U7411/U7311), v2.33 (U9311), v2.23 (E5510), v2.19 (U7510/U7410), v2.13 (U7310), and v1.09 (E459/E449). The FjGabiFlashCoreAbstractionSmm driver registers a Software System Management Interrupt (SWSMI) handler that is not sufficiently validated to ensure that the CommBuffer (or any other communication buffer's nested contents) are not pointing to SMRAM contents. A potential attacker can therefore write fixed data to SMRAM, which could lead to data corruption inside this memory (e.g., change the SMI handler's code or modify SMRAM map structures to break input pointer validation for other SMI handlers). Thus, the attacker could elevate privileges from ring 0 to ring -2 and execute arbitrary code in SMM.

    Published:May 4, 2022
    Last Modified:Nov 4, 2025
    EPS:May 4, 2022
    EPSS Score:0.00111
    CVSS Score:7.8

    Affected Products

    Vendor
    Fujitsu
    Product
    Lifebook A3510
    Vendor
    Fujitsu
    Product
    Lifebook A3510 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook E449
    Vendor
    Fujitsu
    Product
    Lifebook E449 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook E459
    Vendor
    Fujitsu
    Product
    Lifebook E459 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook E5510
    Vendor
    Fujitsu
    Product
    Lifebook E5510 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook U7310
    Vendor
    Fujitsu
    Product
    Lifebook U7310 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook U7311
    Vendor
    Fujitsu
    Product
    Lifebook U7311 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook U7410
    Vendor
    Fujitsu
    Product
    Lifebook U7410 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook U7411
    Vendor
    Fujitsu
    Product
    Lifebook U7411 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook U7510
    Vendor
    Fujitsu
    Product
    Lifebook U7510 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook U7511
    Vendor
    Fujitsu
    Product
    Lifebook U7511 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook U9310
    Vendor
    Fujitsu
    Product
    Lifebook U9310 Firmware
    Vendor
    Fujitsu
    Product
    Lifebook U9311
    Vendor
    Fujitsu
    Product
    Lifebook U9311 Firmware

    Exploits

    https://www.binarly.io/advisorieshttps://www.binarly.io/advisories

    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