CVE-2019-13533 | BDVDB-2026-127549 Detail

Omron PLC CJ and CS Series

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact high. Attack vector: network.

Weaknesses#

CWE-294 Authentication Bypass by Capture-replay

References#

https://www.us-cert.gov/ics/advisories/icsa-19-346-02

Exploit#

No public exploit known

History#

Version 12019-12-16Record published in the CVE List.
Version 22026-06-02Most recent update recorded in the CVE List.

Published

Published: 2019-12-16
Last modified: 2026-06-02

Vendor information

Vendor: Not stated
Product: Omron PLC CJ and CS Series

Score

8.1 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 59.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Authentication Issues

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
Omron PLC CJ series, all versions, Omron PLC CS series, all versions
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.1 High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Changed
Confidentiality	Low
Integrity	Low
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).