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    CVE-2021-33834

    An issue was discovered in iscflashx64.sys 3.9.3.0 in Insyde H2OFFT 6.20.00. When handling IOCTL 0x22229a, the input used to allocate a buffer and copy memory is mishandled. This could cause memory corruption or a system crash.

    Published:Sep 8, 2023
    Last Modified:Nov 21, 2024
    EPS:Sep 8, 2023
    EPSS Score:0.00071
    CVSS Score:7.1

    Affected Products

    Vendor
    Insyde
    Product
    H2offt
    Vendor
    Insyde
    Product
    Iscflashx64.sys

    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