CVE-2021-28856

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    CVE-2021-28856

    Published: 14 Apr 2021Last Modified: 9 Jul 2026

    Summary:

    Details: In Deark before v1.5.8, a specially crafted input file can cause a division by zero in (src/fmtutil.c) because of the value of pixelsize.

    References: https://github.com/fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28856, https://fatihhcelik.github.io/posts/Division-By-Zero-Deark/, https://github.com/jsummers/deark/commit/62acb7753b0e3c0d3ab3c15057b0a65222313334

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -fb671aa5d1b4317fabe5aab3e3713ca4b5798f95

    Affected versions

    v1.5.7
    v1.5.6
    v1.5.5

    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-2021-28856 | CVE-DB