CVEvulnerability

CVE-2020-6988

7.5 HIGH Published 2020-03-16 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-03-16
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-287, CWE-603

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.

Affected configurations

• rockwellautomation micrologix 1400 a firmware • rockwellautomation micrologix 1400 b firmware (<= 21.001) • rockwellautomation micrologix 1100 firmware • rockwellautomation rslogix 500 (<= 12.001)

Related

Weakness · CWE (2)

  • CWE-287 Improper Authentication weakness
  • CWE-603 Use of Client-Side Authentication weakness

References