FKIE_CVE-2019-18269
Vulnerability from fkie_nvd - Published: 2019-12-16 20:15 - Updated: 2026-06-17 02:24
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
8.6 (High) - CVSS:3.1/
Summary
Omron’s CS and CJ series PLCs have an unrestricted externally accessible lock vulnerability.
References
| URL | Tags | ||
|---|---|---|---|
| ics-cert@hq.dhs.gov | https://www.omron-cxone.com/security/2019-12-06_PLC_EN.pdf | ||
| ics-cert@hq.dhs.gov | https://www.us-cert.gov/ics/advisories/icsa-19-346-02 | Third Party Advisory, US Government Resource | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.omron-cxone.com/security/2019-12-06_PLC_EN.pdf | ||
| af854a3a-2127-422b-91ae-364da2661108 | https://www.us-cert.gov/ics/advisories/icsa-19-346-02 | Third Party Advisory, US Government Resource |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| omron | plc_cj_firmware | * | |
| omron | plc_cs_firmware | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Omron PLC CJ Series",
"vendor": "Omron",
"versions": [
{
"status": "affected",
"version": "all versions"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Omron PLC CS series",
"vendor": "Omron",
"versions": [
{
"status": "affected",
"version": "all versions"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Omron PLC NX1P2 series",
"vendor": "Omron",
"versions": [
{
"status": "affected",
"version": "all versions"
}
]
}
],
"source": "ics-cert@hq.dhs.gov"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:omron:plc_cj_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7AF2C347-B4A7-4505-98A4-AFDCB1FCD386",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:omron:plc_cs_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "DF9CD76C-F6E9-4E01-A039-4049B706DD92",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Omron\u2019s CS and CJ series PLCs have an unrestricted externally accessible lock vulnerability."
},
{
"lang": "es",
"value": "En el Omron PLC CJ series, todas las versiones, y en el Omron PLC CS series, todas las versiones, el software comprueba apropiadamente la existencia de un bloqueo, pero el bloqueo puede ser controlado externamente o influenciado por un actor que se encuentra fuera de la esfera de control prevista."
}
],
"id": "CVE-2019-18269",
"lastModified": "2026-06-17T02:24:43.713",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 4.7,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2019-18269",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-02T19:50:04.104058Z",
"version": "2.0.3"
}
}
]
},
"published": "2019-12-16T20:15:15.773",
"references": [
{
"source": "ics-cert@hq.dhs.gov",
"url": "https://www.omron-cxone.com/security/2019-12-06_PLC_EN.pdf"
},
{
"source": "ics-cert@hq.dhs.gov",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://www.us-cert.gov/ics/advisories/icsa-19-346-02"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.omron-cxone.com/security/2019-12-06_PLC_EN.pdf"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://www.us-cert.gov/ics/advisories/icsa-19-346-02"
}
],
"sourceIdentifier": "ics-cert@hq.dhs.gov",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-412"
}
],
"source": "ics-cert@hq.dhs.gov",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Confirmed: The vulnerability has been validated from an analyst's perspective.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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