Rockwell Automation Micrologix 1400 Improper Input Validation
Published Oct 3, 2014
7.1
HIGHCVSS 2.0
EPSS 4.17%
Description
The DNP3 feature on Rockwell Automation Allen-Bradley MicroLogix 1400 1766-Lxxxxx A FRN controllers 7 and earlier and 1400 1766-Lxxxxx B FRN controllers before 15.001 allows remote attackers to cause a denial of service (process disruption) via malformed packets over (1) an Ethernet network or (2) a serial line.
Affected products
-
- Version 0StatusaffectedConstraints<=1766-Lxxxxx Series A FRN 7
- Version 0StatusaffectedConstraints<=1766-Lxxxxx Series B FRN 15.000
- Version Series B FRN 15.001 or higherStatusunaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rockwell Automation | Allen-Bradley MicroLogix 1400 | unaffected |
|
- 1400
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Rockwell Automation has released a new version of MicroLogix 1400 Series B firmware to address the vulnerability and reduce associated risk to successful exploitation. Subsequent versions of MicroLogix 1400 Series B firmware and newer will incorporate these same enhancements.
Rockwell Automation recommends the following immediate mitigation strategies (when possible, multiple strategies should be employed simultaneously):
* Upgrade all MicroLogix 1400 Series B controllers to Series B FRN 15.001 or higher. Current firmware for the MicroLogix 1400 Series B platform can be obtained at the following web address:
http://www.rockwellautomation.com/rockwellautomation/support/pcdc.page
Please refer to Rockwell Automation’s product disclosure (AID 620295) for more information on this topic available at:
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/620295
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 4.17% (0.04171) | 90.59th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.17% (0.04171) | 89.56th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00040) | 9.34th | v4 (v2025.03.14) |
| Dec 17, 2024 | 6.37% (0.06366) | 93.60th | v3 (v2023.03.01) |
| Oct 28, 2023 | 8.73% (0.08733) | 93.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.59% (0.00591) | 74.98th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
References (4)
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2014/icsa-14-254-02.json
- https://ics-cert.us-cert.gov/advisories/ICSA-14-254-02 Third Party AdvisoryUS Government Resource
- https://rockwellautomation.custhelp.com/app/answers/detail/a_id/620295
- https://www.cisa.gov/news-events/ics-advisories/icsa-14-254-02
Change history (0)
No recorded changes yet.