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    CVE-2020-6990

    Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500 Software v12.001 and prior, The cryptographic key utilized to help protect the account password is hard coded into the RSLogix 500 binary file. An attacker could identify cryptographic keys and use it for further cryptographic attacks that could ultimately lead to a remote attacker gaining unauthorized access to the controller.

    Published:Mar 16, 2020
    Last Modified:Jun 3, 2026
    EPS:Mar 16, 2020
    EPSS Score:0.00146
    CVSS Score:9.8

    Affected Products

    Vendor
    Rockwellautomation
    Product
    Micrologix 1100
    Vendor
    Rockwellautomation
    Product
    Micrologix 1100 Firmware
    Vendor
    Rockwellautomation
    Product
    Micrologix 1400
    Vendor
    Rockwellautomation
    Product
    Micrologix 1400 A Firmware
    Vendor
    Rockwellautomation
    Product
    Micrologix 1400 B Firmware
    Vendor
    Rockwellautomation
    Product
    Rslogix 500

    Exploits

    No exploit reference

    Related CVEs

    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