CVE-2019-18269

CRITICALNVD 9.89.8—

9.8

Omron’s CS and CJ series PLCs have an unrestricted externally accessible lock vulnerability.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 42.9%
KEV: Not listed

Published

December 16, 2019

Last Modified

June 2, 2026

Advisory Details (1)

Auto-updated Jun 3, 2026

No patch confirmed yet.

generic

Omron PLC CJ and CS Series (Update B) | CISA

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-412

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 10:25 UTCEG score recompute
2026-05-27 10:25 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2019-18269?

CVE-2019-18269 is a critical vulnerability published on December 16, 2019. Omron’s CS and CJ series PLCs have an unrestricted externally accessible lock vulnerability.

When was CVE-2019-18269 disclosed?

CVE-2019-18269 was first published in the National Vulnerability Database on December 16, 2019, with the most recent update on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-18269 actively exploited?

CVE-2019-18269 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 42.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-18269?

CVE-2019-18269 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2019-18269?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-18269, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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