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    CVE-2022-36338

    An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver FwBlockServiceSmm, creating SMM, leads to arbitrary code execution. An attacker can replace the pointer to the UEFI boot service GetVariable with a pointer to malware, and then generate a software SMI.

    Published:Sep 23, 2022
    Last Modified:May 5, 2025
    EPS:Sep 23, 2022
    EPSS Score:0.00065
    CVSS Score:8.2

    Affected Products

    Vendor
    Insyde
    Product
    Insydeh2o

    Exploits

    https://binarly.io/advisories/BRLY-2022-017/index.htmlhttps://binarly.io/advisories/BRLY-2022-017/index.html

    Common Weakness Enumeration

    No CWE recorded yet

    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