CVE-2019-18261 json
In Omron PLC CS series, all versions, Omron PLC CJ series, all versions, and Omron PLC NJ series, all versions, the software does not imple…
published 6y ago modified 4mo ago also EUVD-2019-8057
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
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.
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cisa ICSA-19-346-03 updated cvss 6.5
Omron PLC CJ, CS and NJ Series
-
Omron PLC CJ series Omron PLC CS series Omron PLC NJ seriesaffected: mitigation “Filter FTP port: Protect access to Omron's PLC with a firewall and block unnecessary remote access to FTP port (default: 21).”
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
1.31% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- n/a Omron PLC CJ, CS and NJ Series
Classification
- Weakness
-
- CWE-307 Improper Restriction of Excessive Authentication Attempts
References
-
us-cert.gov
/ics/advisories/icsa-19-346-03
third-party-advisory, us-government-resource
Sources
- CVE List CVE-2019-18261
- NVD CVE-2019-18261
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