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, A remote, unauthenticated attacker can send a request from the RSLogix 500 software to the victim’s MicroLogix controller. The controller will then respond to the client with used password values to authenticate the user on the client-side. This method of authentication may allow an attacker to bypass authentication altogether, disclose sensitive information, or leak credentials.
History

Wed, 03 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published: 2020-03-16T15:38:36.000Z

Updated: 2026-06-03T13:21:33.239Z

Reserved: 2020-01-14T00:00:00.000Z

Link: CVE-2020-6988

cve-icon Vulnrichment

Updated: 2024-08-04T09:18:02.514Z

cve-icon NVD

Status : Modified

Published: 2020-03-16T16:15:14.767

Modified: 2026-06-03T14:16:23.543

Link: CVE-2020-6988

cve-icon Redhat

No data.