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                    "defaultStatus": "unaffected",
                    "product": "Allen-Bradley MicroLogix 1400",
                    "vendor": "Rockwell Automation",
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                            "lessThanOrEqual": "1766-Lxxxxx Series A FRN 7",
                            "status": "affected",
                            "version": "0",
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                        {
                            "lessThanOrEqual": "1766-Lxxxxx Series B FRN 15.000",
                            "status": "affected",
                            "version": "0",
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                        },
                        {
                            "status": "unaffected",
                            "version": "Series B FRN 15.001 or higher"
                        }
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            "credits": [
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                    "lang": "en",
                    "type": "finder",
                    "value": "Matthew Luallen of CYBATI"
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            "datePublic": "2014-09-30T06:00:00.000Z",
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                            "value": "<p>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.</p>"
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                    "value": "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."
                }
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                        "accessComplexity": "MEDIUM",
                        "accessVector": "NETWORK",
                        "authentication": "NONE",
                        "availabilityImpact": "COMPLETE",
                        "baseScore": 7.1,
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
                        "version": "2.0"
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                "shortName": "icscert",
                "dateUpdated": "2025-11-04T22:30:19.113Z"
            },
            "references": [
                {
                    "url": "https://rockwellautomation.custhelp.com/app/answers/detail/a_id/620295"
                },
                {
                    "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-14-254-02"
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                    "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2014/icsa-14-254-02.json"
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                            "value": "<p>Rockwell Automation has released a new version of MicroLogix 1400 \nSeries B firmware to address the vulnerability and reduce associated \nrisk to successful exploitation. Subsequent versions of MicroLogix 1400 \nSeries B firmware and newer will incorporate these same enhancements.</p>\n<p>Rockwell Automation recommends the following immediate mitigation \nstrategies (when possible, multiple strategies should be employed \nsimultaneously):</p>\n<ul>\n<li>Upgrade all MicroLogix 1400 Series B controllers to Series B FRN \n15.001 or higher. Current firmware for the MicroLogix 1400 Series B \nplatform can be obtained at the following web address:</li>\n</ul>\n<p><a target=\"_blank\" rel=\"nofollow\" href=\"http://www.rockwellautomation.com/rockwellautomation/support/pcdc.page\">http://www.rockwellautomation.com/rockwellautomation/support/pcdc.page</a></p>\n\n\n<p>Please refer to Rockwell Automation’s product disclosure (AID 620295) for more information on this topic available at:</p>\n<p><a target=\"_blank\" rel=\"nofollow\" href=\"https://rockwellautomation.custhelp.com/app/answers/detail/a_id/620295\">https://rockwellautomation.custhelp.com/app/answers/detail/a_id/620295</a></p>\n\n<br>"
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                    "value": "Rockwell Automation has released a new version of MicroLogix 1400 \nSeries B firmware to address the vulnerability and reduce associated \nrisk to successful exploitation. Subsequent versions of MicroLogix 1400 \nSeries B firmware and newer will incorporate these same enhancements.\n\n\nRockwell Automation recommends the following immediate mitigation \nstrategies (when possible, multiple strategies should be employed \nsimultaneously):\n\n\n\n  *  Upgrade all MicroLogix 1400 Series B controllers to Series B FRN \n15.001 or higher. Current firmware for the MicroLogix 1400 Series B \nplatform can be obtained at the following web address:\n\n\n\n\n http://www.rockwellautomation.com/rockwellautomation/support/pcdc.page \n\n\n\n\nPlease refer to Rockwell Automation’s product disclosure (AID 620295) for more information on this topic available at:\n\n\n https://rockwellautomation.custhelp.com/app/answers/detail/a_id/620295"
                }
            ],
            "source": {
                "advisory": "ICSA-14-254-02",
                "discovery": "EXTERNAL"
            },
            "title": "Rockwell Automation Micrologix 1400 Improper Input Validation",
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                            "value": "<p>Users with Series A and Series B controllers are also recommended to apply the following risk mitigations:</p>\n<ul>\n<li>Do not enable DNP3 communication in the product unless required.</li>\n<li>Where appropriate, prohibit DNP3 communication that originates \noutside the perimeter of the manufacturing zone from entry into the zone\n by blocking communication directed at Ethernet communication Port \n20000/TCP* and 20000/UDP* using appropriate security technology (e.g., a\n firewall, UTM devices, or other security appliance)</li>\n</ul>\n<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *Note: Ports 20000/TCP and 20000/UDP are factory defaults \nas per the DNP3 specification but can be reconfigured by the product \nowner.</p>\n<ul>\n<li>Employ firewalls with ingress/egress filtering, intrusion \ndetection/prevention systems, and validate all configurations. Evaluate \nfirewall configurations to ensure other appropriate inbound and outbound\n traffic is blocked.</li>\n<li>Restrict physical and electronic access to automation products, \nnetworks, and systems to only those individuals authorized to be in \ncontact with control system equipment.</li><li>Employ layered security, defense-in-depth methods and network \nsegregation and segmentation practices in system design to restrict and \ncontrol access to individual products and control networks. Refer to <a target=\"_blank\" rel=\"nofollow\" href=\"http://www.ab.com/networks/architectures.html%20\">http://www.ab.com/networks/architectures.html</a>&nbsp;for comprehensive information about implementing validated architectures designed to deliver these measures.</li>\n</ul>\n<p>Please refer to Rockwell Automation’s product disclosure (AID 620295) for more information on this topic available at:</p>\n<p><a target=\"_blank\" rel=\"nofollow\" href=\"https://rockwellautomation.custhelp.com/app/answers/detail/a_id/620295\">https://rockwellautomation.custhelp.com/app/answers/detail/a_id/620295</a></p>\n\n<br>"
                        }
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                    "value": "Users with Series A and Series B controllers are also recommended to apply the following risk mitigations:\n\n\n\n  *  Do not enable DNP3 communication in the product unless required.\n\n  *  Where appropriate, prohibit DNP3 communication that originates \noutside the perimeter of the manufacturing zone from entry into the zone\n by blocking communication directed at Ethernet communication Port \n20000/TCP* and 20000/UDP* using appropriate security technology (e.g., a\n firewall, UTM devices, or other security appliance)\n\n\n\n\n          *Note: Ports 20000/TCP and 20000/UDP are factory defaults \nas per the DNP3 specification but can be reconfigured by the product \nowner.\n\n\n\n  *  Employ firewalls with ingress/egress filtering, intrusion \ndetection/prevention systems, and validate all configurations. Evaluate \nfirewall configurations to ensure other appropriate inbound and outbound\n traffic is blocked.\n\n  *  Restrict physical and electronic access to automation products, \nnetworks, and systems to only those individuals authorized to be in \ncontact with control system equipment.\n  *  Employ layered security, defense-in-depth methods and network \nsegregation and segmentation practices in system design to restrict and \ncontrol access to individual products and control networks. Refer to  http://www.ab.com/networks/architectures.html http://www.ab.com/networks/architectures.html%20  for comprehensive information about implementing validated architectures designed to deliver these measures.\n\n\n\n\nPlease refer to Rockwell Automation’s product disclosure (AID 620295) for more information on this topic available at:\n\n\n https://rockwellautomation.custhelp.com/app/answers/detail/a_id/620295"
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