CVE-2020-6990

9.8 CRITICAL
Published: March 16, 2020 Modified: June 03, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://www.us-cert.gov/ics/advisories/icsa-20-070-06
Source: ics-cert@hq.dhs.gov
Third Party Advisory US Government Resource
https://www.us-cert.gov/ics/advisories/icsa-20-070-06
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory US Government Resource

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
4.2%
90th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

rockwellautomation