{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-111459", "assignerOrgId": "2e0a0ee2-d866-482a-9f5e-ac03d156dbaa", "state": "PUBLISHED", "assignerShortName": "Moxa", "dateReserved": "2026-10-16T05:36:36.354Z", "datePublished": "2026-10-27T07:08:17.598Z", "dateUpdated": "2026-10-27T07:08:17.598Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "2e0a0ee2-d866-482a-9f5e-ac03d156dbaa", "shortName": "Moxa", "dateUpdated": "2026-10-27T07:08:17.598Z"}, "title": "Unauthenticated server-supplied OpenVPN configuration in Moxa Remote Connect Suite (MRC Client)", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-295", "description": "CWE-295: Improper Certificate Validation", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-94", "descriptions": [{"lang": "en", "value": "CAPEC-94: Adversary in the Middle (AiTM)"}]}], "affected": [{"vendor": "Moxa", "product": "Moxa Remote Connect Suite (MRC Client)", "versions": [{"status": "affected", "version": "1.0.0", "lessThanOrEqual": "4.2.0", "versionType": "custom"}, {"status": "unaffected", "version": "4.2.2", "versionType": "custom"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:moxa:moxa_remote_connect_suite_mrc_client_:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.0.0", "versionEndIncluding": "4.2.0"}, {"vulnerable": false, "criteria": "cpe:2.3:a:moxa:moxa_remote_connect_suite_mrc_client_:4.2.2:*:*:*:*:*:*:*"}]}]}], "descriptions": [{"lang": "en", "value": "An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client). Under certain conditions, an unauthenticated attacker\u00a0with on-path access to the communication between the MRC Client and its server could impersonate a trusted server and conduct a man-in-the-middle attack, potentially compromising the confidentiality and integrity of communications.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client). Under certain conditions, an unauthenticated attacker with on-path access to the communication between the MRC Client and its server could impersonate a trusted server and conduct a man-in-the-middle attack, potentially compromising the confidentiality and integrity of communications."}]}], "references": [{"url": "https://www.moxa.com/en/support/product-support/security-advisory/mpsa-269510-cve-2026-111459-cve-2026-111460-cve-2026-111461-vulnerabilities-in-moxa-remote-connect-suite-mrc-client", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "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": "HIGH", "baseScore": 7.6, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}}], "solutions": [{"lang": "en", "value": "Please refer Moxa's security advisory:\u00a0https://www.moxa.com/en/support/product-support/security-advisory/mpsa-269510-cve-2026-111459-cve-2026-111460-cve-2026-111461-vulnerabilities-in-moxa-remote-connect-suite-mrc-client", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Please refer Moxa's security advisory: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-269510-cve-2026-111459-cve-2026-111460-cve-2026-111461-vulnerabilities-in-moxa-remote-connect-suite-mrc-client "}]}], "credits": [{"lang": "en", "value": "Abhinav Agarwal", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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