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    CVE-2025-63929

    A null pointer dereference vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). When multiple threads enqueue elements concurrently via IEC10X_PrioEnQueue, the function may dereference a null or freed queue pointer, resulting in a segmentation fault and potential denial-of-service.

    Published:Nov 12, 2025
    Last Modified:Jan 14, 2026
    EPS:Nov 12, 2025
    EPSS Score:0.00057
    CVSS Score:7.5

    Affected Products

    Vendor
    Airpig2011
    Product
    Iec104

    Exploits

    https://github.com/airpig2011/IEC104/issues/21https://songsong.host/mybugs/CVE-2025-63929.html

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    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