What’s Vulnerable › Vulnerabilities

CVE-2019-18261

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-12-16 · updated 2026-06-17
• Weakness: CWE-307

Description

In Omron PLC CS series, all versions, Omron PLC CJ series, all versions, and Omron PLC NJ series, all versions, the software does not implement sufficient measures to prevent multiple failed authentication attempts within in a short time frame, making it more susceptible to brute force attacks.

Affected products

• Omron Plc Cj Firmware: all versions
• Omron Plc Cs Firmware: all versions
• Omron Plc Nj Firmware: all versions

References

• https://www.us-cert.gov/ics/advisories/icsa-19-346-03
• https://www.us-cert.gov/ics/advisories/icsa-19-346-03

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