CVE-2020-6990

CRITICAL

Rockwell Automation MicroLogix - Info Disclosure

Title source: llm
STIX 2.1

Description

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.

References (1)

Core 1
Core References
Third Party Advisory, US Government Resource x_refsource_misc
https://www.us-cert.gov/ics/advisories/icsa-20-070-06

Scores

CVSS v3 9.8
EPSS 0.0015
EPSS Percentile 34.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-321 CWE-798
Status published
Products (4)
rockwellautomation/micrologix_1100_firmware
rockwellautomation/micrologix_1400_a_firmware
rockwellautomation/micrologix_1400_b_firmware < 21.001
rockwellautomation/rslogix_500 < 12.001
Published Mar 16, 2020
Tracked Since Feb 18, 2026