{"id":"CVE-2026-111459","title":"Unauthenticated server-supplied OpenVPN configuration in Moxa Remote Connect Suite (MRC Client)","summary":"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…","severity":"high","cvss":7.6,"cvssVector":"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","cvssSource":"cna","cwe":["CWE-295"],"vendor":"Moxa","product":"Moxa Remote Connect Suite (MRC Client)","affected":["remote_connect_suite_mrc_client >= 1.0.0 <= 4.2.0"],"published":"2026-10-27","updated":"2026-10-27","sourceUpdated":"2026-10-27T07:08:17.598Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111459","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":["cve.org"],"epss":0.00173,"epssPercentile":0.06679,"ingestedAt":"2026-10-27T16:11:59.235Z","slug":"CVE-2026-111459","body":"## Overview\n\nAn 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.\n\n## Affected\n\n- `remote_connect_suite_mrc_client >= 1.0.0 <= 4.2.0`\n\n## Remediation\n\nPlease 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","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}