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In Omron PLC CJ series, all versions, and Omron PLC CS...

Moderate severity Unreviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Jun 2, 2026

Package

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Affected versions

Unknown

Patched versions

Unknown

Description

In Omron PLC CJ series, all versions, and Omron PLC CS series, all versions, an attacker could monitor traffic between the PLC and the controller and replay requests that could result in the opening and closing of industrial valves.

References

Published by the National Vulnerability Database Dec 16, 2019
Published to the GitHub Advisory Database May 24, 2022
Last updated Jun 2, 2026

Severity

Moderate

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(56th percentile)

Weaknesses

Authentication Bypass by Capture-replay

A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes). Learn more on MITRE.

CVE ID

CVE-2019-13533

GHSA ID

GHSA-rp7w-4xxf-cq5w

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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