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    CVE-2020-6986

    In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.

    Published:Mar 5, 2020
    Last Modified:Jun 2, 2026
    EPS:Mar 5, 2020
    EPSS Score:0.00665
    CVSS Score:7.5

    Affected Products

    Vendor
    Omron
    Product
    Plc Cj1
    Vendor
    Omron
    Product
    Plc Cj1 Firmware
    Vendor
    Omron
    Product
    Plc Cj2
    Vendor
    Omron
    Product
    Plc Cj2 Firmware

    Exploits

    No exploit reference

    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