{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-39453", "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "state": "PUBLISHED", "assignerShortName": "icscert", "dateReserved": "2026-04-08T19:28:49.591Z", "datePublished": "2026-10-09T14:42:18.998Z", "dateUpdated": "2026-10-11T17:05:28.474Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert", "dateUpdated": "2026-10-09T14:42:18.998Z"}, "title": "Red Lion Controls N-Tron 700 Series Reachable Assertion", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-617", "description": "CWE-617", "type": "CWE"}]}], "affected": [{"vendor": "Red Lion Controls", "product": "700 Series", "versions": [{"status": "affected", "version": "0", "lessThan": "Firmware Versions 3.11.0", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "Bootloader Versions 2.0.6.1", "versionType": "custom"}, {"status": "unaffected", "version": "3.11.1"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Navigating to a certain URL on the switch\u2019s web server causes the switch to reboot. This can be automated using a tool like curl to create DoS conditions where the switch constantly reboots.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Navigating to a certain URL on the switch\u2019s web server causes the switch to reboot. This can be automated using a tool like curl to create DoS conditions where the switch constantly reboots."}]}], "references": [{"url": "https://www.hms-networks.com/"}, {"url": "https://www.hms-networks.com/cybersecurity"}, {"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01"}, {"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 8.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "subConfidentialityImpact": "LOW", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.5, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H"}}], "solutions": [{"lang": "en", "value": "Red Lion controls recommends the following upgrades for the N-Tron 700 Series: \n\n\n * Upgrade to firmware version 3.11.1 or greater\n * Configure or disable the SNMP communities\n * Disable access to the web GUI\n\n\n\n\n\nThe upgrade procedure document can be viewed here https://www.hms-networks.com/ .\n\n\n\n\nThe advisory issued by HMS Networks regarding these vulnerabilities can be viewed here https://www.hms-networks.com/cybersecurity .", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Red Lion controls recommends the following upgrades for the N-Tron 700 Series: <br></p><ul><li>Upgrade to firmware version 3.11.1 or greater</li><li>Configure or disable the SNMP communities</li><li>Disable access to the web GUI</li></ul>\n<p>The upgrade procedure document can be viewed <a href=\"https://www.hms-networks.com/\">here</a>.</p>\n<p>The advisory issued by HMS Networks regarding these vulnerabilities can be viewed <a href=\"https://www.hms-networks.com/cybersecurity\">here</a>.</p>"}]}], "credits": [{"lang": "en", "value": "Gabrianna (Ria) Milloway of Idaho National Laboratory reported this vulnerability to CISA.", "type": "finder"}], "source": {"advisory": "ICSA-26-281-01", "discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-39453", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-11T16:49:22.992241Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-11T17:05:28.474Z"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "700 Series", "vendor": "Red Lion Controls", "versions": [{"lessThan": "Firmware Versions 3.11.0", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "Bootloader Versions 2.0.6.1", "status": "affected", "version": "0", "versionType": "custom"}, {"status": "unaffected", "version": "3.11.1"}]}], "source": "ics-cert@hq.dhs.gov"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Navigating to a certain URL on the switch\u2019s web server causes the switch to reboot. This can be automated using a tool like curl to create DoS conditions where the switch constantly reboots."}], "id": "CVE-2026-39453", "lastModified": "2026-10-11T17:17:05.000", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.5, "source": "ics-cert@hq.dhs.gov", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "ics-cert@hq.dhs.gov", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-39453", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-11T16:49:22.992241Z", "version": "2.0.3"}}]}, "published": "2026-10-09T15:17:14.500", "references": [{"source": "ics-cert@hq.dhs.gov", "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json"}, {"source": "ics-cert@hq.dhs.gov", "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01"}, {"source": "ics-cert@hq.dhs.gov", "url": "https://www.hms-networks.com/"}, {"source": "ics-cert@hq.dhs.gov", "url": "https://www.hms-networks.com/cybersecurity"}], "sourceIdentifier": "ics-cert@hq.dhs.gov", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-617"}], "source": "ics-cert@hq.dhs.gov", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0, Firmware Versions 3.11.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0, Bootloader Versions 2.0.6.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "3.11.1"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "700 Series", "source": "cna", "vendor": "Red Lion Controls"}, "product": "700_series", "vendor": "red_lion_controls"}], "created": "2026-10-09T17:00:09.840032+00:00", "updated": "2026-10-11T12:26:27.491647+00:00", "vendors": ["red_lion_controls", "red_lion_controls$PRODUCT$700_series"]}