{"id":"CVE-2026-111459","aliases":["EUVD-2026-110617","GHSA-vrmg-3792-4rx3"],"status":"published","title":"Unauthenticated server-supplied OpenVPN configuration in Moxa Remote Connect Suite (MRC Client)","description":"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.","severity":{"version":"4.0","score":7.6,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00173,"percentile":0.068,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2026-10-27T07:08:17Z","modified":"2026-11-04T15:00:47Z","products":[{"vendor":"moxa","product":"moxa remote connect suite (mrc client)"}],"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"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111459"},{"url":"https://github.com/advisories/GHSA-vrmg-3792-4rx3"}],"sources":{"cve":[{"id":"CVE-2026-111459","title":"Unauthenticated server-supplied OpenVPN configuration in Moxa Remote Connect Suite (MRC Client)","description":"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.","status":"published","published":"2026-10-27T07:08:17.598Z","modified":"2026-11-04T15:00:47.536Z","cvss":[{"version":"4.0","score":7.6,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-04T16:33:47.459854Z"}],"euvd":[{"id":"EUVD-2026-110617","description":"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.","status":"published","published":"2026-10-27T07:08:17Z","modified":"2026-11-04T15:00:47Z","cvss":[{"version":"4.0","score":7.6,"vector":"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","level":"high"}],"updated_at":"2026-11-04T16:10:35.925015Z"}],"ghsa":[{"id":"GHSA-vrmg-3792-4rx3","title":"An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client)...","description":"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.","status":"published","published":"2026-10-27T09:30:58Z","modified":"2026-10-27T09:31:00Z","cvss":[{"version":"4.0","score":7.6,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:14:28.078787Z"}],"nvd":[{"id":"CVE-2026-111459","description":"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.","status":"published","published":"2026-10-27T08:16:52.953Z","modified":"2026-11-04T15:17:27.54Z","cvss":[{"version":"4.0","score":7.6,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-295"],"updated_at":"2026-11-04T18:06:23.753671Z"}]}}