CVE-2021-3404

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    CVE-2021-3404

    Published: 4 Mar 2021Last Modified: 8 Jul 2026

    Summary:

    Details: In ytnef 1.9.3, the SwapWord function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a heap buffer overflow which can be triggered via a crafted file.

    References: https://bugzilla.redhat.com/show_bug.cgi?id=1926965, https://github.com/Yeraze/ytnef/issues/86

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- d9b2f01d125c9b178f7a00ec397cc2a9f258e8e1
    Fixed -None

    Affected versions

    1.9.3

    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-2021-3404 | CVE-DB