Omron’s CS and CJ series PLCs have an unrestricted externally accessible lock vulnerability.
Priority MEDIUM 50CWE-412Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Omron’s CS and CJ series PLCs have an unrestricted externally accessible lock vulnerability.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0104 64th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OMRON Corporation | Omron PLC CJ Series | all versions | — | No fix listed | CNA |
| OMRON Corporation | Omron PLC CS series | all versions | — | No fix listed | CNA |
| OMRON Corporation | Omron PLC NX1P2 series | all versions | — | No fix listed | CNA |
- Omron PLC CJ Series VendorOMRON Corporation Affected all versions Fixed in — No fix listed CNA
- Omron PLC CS series VendorOMRON Corporation Affected all versions Fixed in — No fix listed CNA
- Omron PLC NX1P2 series VendorOMRON Corporation Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:omron:plc_cj_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | OMRON Corporation |
| cpe:2.3:o:omron:plc_cs_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | OMRON Corporation |
- cpe:2.3:o:omron:plc_cj_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·OMRON Corporation
- cpe:2.3:o:omron:plc_cs_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·OMRON Corporation
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-18269
- 2026-10-03 Alias added: GHSA-5xrh-m4jr-pgwp
References
More OMRON Corporation Plc Cj Firmware vulnerabilities
- TI-2019-13275 Authentication bypass by spoofing in Omron PLC CJ and CS Series CVSS 3.1CRITICAL 9.8
- TI-2019-13276 Missing brute-force protection in Omron PLC CJ, CS and NJ Series CVSS 3.1CRITICAL 9.8
- TI-2019-10165 Authentication bypass by capture-replay in Omron PLC CJ and CS Series CVSS 3.1HIGH 8.1
Sources
- CVE-2019-18269 · CVE Program
- CVE-2019-18269 · NVD
- FIRST EPSS
- GHSA-5xrh-m4jr-pgwp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences