{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-84235","assignerOrgId":"b73dd486-f505-4403-b634-40b078b177f0","state":"PUBLISHED","assignerShortName":"Rockwell","dateReserved":"2026-09-01T12:56:28.970Z","datePublished":"2026-09-01T13:07:28.779Z","dateUpdated":"2026-09-01T15:41:57.774Z"},"containers":{"cna":{"providerMetadata":{"orgId":"b73dd486-f505-4403-b634-40b078b177f0","shortName":"Rockwell","dateUpdated":"2026-09-01T13:07:28.779Z"},"title":"Rockwell Automation 1756-ENBT Denial of Service Vulnerability","affected":[{"vendor":"Rockwell Automation","product":"1756-ENBT Module","versions":[{"status":"affected","version":"All versions"}],"defaultStatus":"unaffected"}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:rockwell_automation:1756-enbt_module:all_versions:*:*:*:*:*:*:*"}]}]}],"descriptions":[{"lang":"en","value":"A denial-of-service security issue exists in the affected product. The security issue stems from a crafted CIP packet being sent crashing the module. The device requires a restart to recover.","supportingMedia":[{"type":"text/html","base64":false,"value":"A denial-of-service security issue exists in the affected product. The security issue stems from a crafted CIP packet being sent crashing the module. The device requires a restart to recover."}]}],"references":[{"url":"https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1798.html"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","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":"HIGH","baseScore":8.7,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}}],"solutions":[{"lang":"en","value":"Upgrade to 1756-EN2T or\n\n\n\n1756-EN4TR","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Upgrade to 1756-EN2T or</p><p>1756-EN4TR</p>"}]}],"source":{"advisory":"SD1798","discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-400","lang":"en","description":"CWE-400 Uncontrolled Resource Consumption"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-01T15:41:44.743824Z","id":"CVE-2026-84235","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-01T15:41:57.774Z"}}]}}