{"id":"CVE-2026-33272","state":"PUBLISHED","title":"Red Lion Controls N-Tron 700 Series Authentication Bypass Using an Alternate Path or Channel","description":"A malicious user with physical access to the device can boot the switch from factory settings without authentication, use the default administrative credentials to obtain administrative access, and save changes to the configuration file so that they persist next time the switch boots normally.","publishedAt":"2026-10-09T14:44:26.429Z","updatedAt":"2026-10-11T17:05:28.353Z","severity":{"score":6.8,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N","source":"icscert"},"assigner":"icscert","products":["Red Lion Controls 700 Series"],"affected":[{"vendor":"Red Lion Controls","product":"700 Series","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"Firmware Versions 3.11.0","versionType":"custom"},{"version":"0","status":"affected","lessThan":"Bootloader Versions 2.0.6.1","versionType":"custom"},{"version":"3.11.1","status":"unaffected"}]}],"references":["https://www.hms-networks.com/","https://www.hms-networks.com/cybersecurity","https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01","https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json"],"weaknesses":["CWE-288"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/33xxx/CVE-2026-33272.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33272","state":"PUBLISHED","datePublished":"2026-10-09T14:44:26.429Z","dateUpdated":"2026-10-11T17:05:28.353Z","assignerShortName":"icscert","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateReserved":"2026-04-08T19:28:49.636Z"},"containers":{"cna":{"title":"Red Lion Controls N-Tron 700 Series Authentication Bypass Using an Alternate Path or Channel","descriptions":[{"lang":"en","value":"A malicious user with physical access to the device can boot the switch from factory settings without authentication, use the default administrative credentials to obtain administrative access, and save changes to the configuration file so that they persist next time the switch boots normally."}],"affected":[{"vendor":"Red Lion Controls","product":"700 Series","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"Firmware Versions 3.11.0","versionType":"custom"},{"version":"0","status":"affected","lessThan":"Bootloader Versions 2.0.6.1","versionType":"custom"},{"version":"3.11.1","status":"unaffected"}]}],"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":"PHYSICAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":4.9,"vectorString":"CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"PHYSICAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"LOW","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","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":"MEDIUM","baseScore":6.8,"vectorString":"CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-288","lang":"en","description":"CWE-288","type":"CWE"}]}],"providerMetadata":{"shortName":"icscert","orgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateUpdated":"2026-10-09T14:44:26.429Z"},"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":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-33272","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-11T16:49:14.728539Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-11T17:05:28.353Z"}}]}}}