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VULNERABILITIES

CVE-2020-6988 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://www.us-cert.gov/ics/advisories/icsa-20-070-06 CVEThird Party AdvisoryUS Government Resource
https://www.us-cert.gov/ics/advisories/icsa-20-070-06 [email protected]Third Party AdvisoryUS Government Resource

Weakness Enumeration

CWE-IDCWE NameSource
CWE-287Improper Authentication[email protected]
CWE-603Use of Client-Side Authentication[email protected]

Affected Products

ProductVersions

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2020-6988
NVD Published Date:
Mar 16, 2020
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]