Is CVE-2020-6988 actively exploited?

No active exploitation of CVE-2020-6988 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-6988 be exploited remotely?

Yes. CVE-2020-6988 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-6988?

CVE-2020-6988 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2020-6988

HIGH

CVE-2020-6988

CWE-603Published: March 16, 2020· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-6988 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.