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CVE-2020-6986

7.5 HIGH

In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service e...

Published: 2020-03-05 · Last updated: 2026-06-02

Severity and scoring

CVSS
7.5 HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-400

Affected products

VendorProduct
omronplc_cj1_firmware, plc_cj2_firmware

Description

In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.

Source: NVD

References

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  • CVE-2019-18269 — Omron’s CS and CJ series PLCs have an unrestricted externally accessible lock vulnerability (9.8 CRITICAL)
  • CVE-2019-13533 — In Omron PLC CJ series, all versions, and Omron PLC CS series, all versions, an attacker could monitor traffic between the PLC and the co... (8.1 HIGH)
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