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    CVE-2021-4156

    An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.

    Published:Apr 13, 2021
    Last Modified:Dec 11, 2025
    EPS:Mar 23, 2022
    EPSS Score:0.00103
    CVSS Score:7.1

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Libsndfile Project
    Product
    Libsndfile
    Vendor
    Redhat
    Product
    Enterprise Linux

    Common Weakness Enumeration

    Common Attack Pattern Enumeration and Classification (CAPEC)

    Related CVEs

    References

    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