CVE-2020-6990

CVE-2020-6990

Vendor N/A
Product 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
Weakness CWE-321
Published March 16, 2020
Last update June 3, 2026

CVSS base score

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 16, 2020 CVE published
June 3, 2026 Record updated