VULNERABILITY INTELLIGENCE

CVE-2020-6988

CVSS score7.5 HIGH
EPSS probability5.42%
CISA KEVNot currently listed
Published2020-03-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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, 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.

Weakness classification

  • ics-cert@hq.dhs.gov: CWE-603
  • nvd@nist.gov: CWE-287

Primary references