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    CVE-2025-53476

    A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3 a931181e8b81e36fadf7b74d5cba99b73c3f6d58. A specially crafted series of network connections can lead to the server not processing subsequent Modbus requests. An attacker can open a series of TCP connections to trigger this vulnerability.

    Published:Oct 7, 2025
    Last Modified:Apr 15, 2026
    EPS:Oct 7, 2025
    EPSS Score:0.00097
    CVSS Score:5.3

    Affected Products

    Vendor
    Openplcproject
    Product
    Openplc V3
    Vendor
    Openplcproject
    Product
    Openplc V3 Firmware

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    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