CVE-2026-40434

{"id": "CVE-2026-40434", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40434", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-17T20:27:23.496359Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "ics-cert@hq.dhs.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "affected": [{"source": "ics-cert@hq.dhs.gov", "affectedData": [{"vendor": "Anviz", "product": "Anviz CrossChex Standard", "versions": [{"status": "affected", "version": "All versions"}], "defaultStatus": "unaffected"}]}], "published": "2026-04-17T20:16:36.083", "references": [{"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-106-03.json", "tags": ["Third Party Advisory"], "source": "ics-cert@hq.dhs.gov"}, {"url": "https://www.anviz.com/contact-us.html", "tags": ["Product"], "source": "ics-cert@hq.dhs.gov"}, {"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-106-03", "tags": ["US Government Resource"], "source": "ics-cert@hq.dhs.gov"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "ics-cert@hq.dhs.gov", "description": [{"lang": "en", "value": "CWE-940"}]}], "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."}], "lastModified": "2026-06-17T10:45:18.377", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:anviz:crosschex_standard:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "155C659B-9DDA-46B7-9020-0D8741D19926"}], "operator": "OR"}]}], "sourceIdentifier": "ics-cert@hq.dhs.gov"}