{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40434","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","state":"PUBLISHED","assignerShortName":"icscert","dateReserved":"2026-04-14T15:42:14.096Z","datePublished":"2026-04-17T19:49:28.099Z","dateUpdated":"2026-04-17T20:28:02.785Z"},"containers":{"cna":{"providerMetadata":{"orgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","shortName":"icscert","dateUpdated":"2026-04-17T19:49:28.099Z"},"title":"Anviz CrossChex Standard Improper Verification of Source of a Communication Channel","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-940","description":"CWE-940","type":"CWE"}]}],"affected":[{"vendor":"Anviz","product":"Anviz CrossChex Standard","versions":[{"status":"affected","version":"All versions"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"Anviz CrossChex Standard\nlacks source verification in the client/server channel, enabling TCP \npacket injection by an attacker on the same network to alter or disrupt \napplication traffic.","supportingMedia":[{"type":"text/html","base64":false,"value":"Anviz CrossChex Standard\nlacks source verification in the client/server channel, enabling TCP \npacket injection by an attacker on the same network to alter or disrupt \napplication traffic."}]}],"references":[{"url":"https://www.anviz.com/contact-us.html"},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-106-03"},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-106-03.json"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":8.1,"vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H"}}],"workarounds":[{"lang":"en","value":"Anviz did not respond to CISA's attempts to coordinate these \nvulnerabilities. Users should contact Anviz for more information at \nhttps://www.anviz.com/contact-us.html.","supportingMedia":[{"type":"text/html","base64":false,"value":"Anviz did not respond to CISA's attempts to coordinate these \nvulnerabilities. Users should contact Anviz for more information at \nhttps://www.anviz.com/contact-us.html."}]}],"source":{"advisory":"ICSA-26-106-03","discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-17T20:27:23.496359Z","id":"CVE-2026-40434","options":[{"Exploitation":"none"},{"Automatable":"no"},{"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":"2026-04-17T20:28:02.785Z"}}]}}