1. Home
  2. CVE Database
  3. CVE-2020-6988
HIGH · 7.5

CVE-2020-6988

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, unauthen...

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
RockwellautomationMicrologix 1400 A FirmwareAll versions
RockwellautomationMicrologix 1400 B Firmware<= 21.001
RockwellautomationMicrologix 1400-
RockwellautomationMicrologix 1100 FirmwareAll versions
RockwellautomationMicrologix 1100-
RockwellautomationRslogix 500<= 12.001

Related Weaknesses (CWE)

CWE-287CWE-603

References

FAQ

What is CVE-2020-6988?

CVE-2020-6988 is a vulnerability with a CVSS score of 7.5 (HIGH). 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, unauthen...

How severe is CVE-2020-6988?

CVE-2020-6988 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-6988?

Check the references section above for vendor advisories and patch information. Affected products include: Rockwellautomation Micrologix 1400 A Firmware, Rockwellautomation Micrologix 1400 B Firmware, Rockwellautomation Micrologix 1400, Rockwellautomation Micrologix 1100 Firmware, Rockwellautomation Micrologix 1100.