{"id":"CVE-2026-40434","state":"PUBLISHED","title":"Anviz CrossChex Standard Improper Verification of Source of a Communication Channel","description":"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.","publishedAt":"2026-04-17T19:49:28.099Z","updatedAt":"2026-04-17T20:28:02.785Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","source":"icscert"},"assigner":"icscert","products":["Anviz Anviz CrossChex Standard"],"affected":[{"vendor":"Anviz","product":"Anviz CrossChex Standard","defaultStatus":"unaffected","versions":[{"version":"All versions","status":"affected"}]}],"references":["https://www.anviz.com/contact-us.html","https://www.cisa.gov/news-events/ics-advisories/icsa-26-106-03","https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-106-03.json"],"weaknesses":["CWE-940"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40434.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40434","state":"PUBLISHED","datePublished":"2026-04-17T19:49:28.099Z","dateUpdated":"2026-04-17T20:28:02.785Z","assignerShortName":"icscert","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateReserved":"2026-04-14T15:42:14.096Z"},"containers":{"cna":{"title":"Anviz CrossChex Standard Improper Verification of Source of a Communication Channel","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."}],"affected":[{"vendor":"Anviz","product":"Anviz CrossChex Standard","defaultStatus":"unaffected","versions":[{"version":"All versions","status":"affected"}]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-940","lang":"en","description":"CWE-940","type":"CWE"}]}],"providerMetadata":{"shortName":"icscert","orgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateUpdated":"2026-04-17T19:49:28.099Z"},"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":[{"title":"CISA ADP Vulnrichment","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"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-17T20:28:02.785Z"}}]}}}