CVE-2021-33834

    Dashboard / Vulnerabilities / CVE-2021-33834

    CVE-2021-33834

    Published: 8 Sept 2023Last Modified: 10 Mar 2026

    Summary:

    Details: 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.

    References: https://www.insyde.com/security-pledge, , https://www.insyde.com/security-pledge/SA-2021004

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2021-33834 | CVE-DB