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    CVE-2022-35408

    An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)

    Published:Sep 22, 2022
    Last Modified:May 27, 2025
    EPS:Sep 22, 2022
    EPSS Score:0.00065
    CVSS Score:8.2

    Affected Products

    Vendor
    Insyde
    Product
    Insydeh2o

    Exploits

    https://binarly.io/advisories/BRLY-2022-022/index.htmlhttps://binarly.io/advisories/BRLY-2022-022/index.html

    Common Weakness Enumeration

    CWE-123 Write-what-where Condition

    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