{"id":"CVE-2016-8368","aliases":["EUVD-2016-9216","GHSA-v2rq-g9fx-7mr6"],"status":"published","title":"An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface...","description":"An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all versions, QJ71E71-B5, all versions, and QJ71E71-B2, all versions. The affected Ethernet interface module is connected to a MELSEC-Q PLC, which may allow a remote attacker to connect to the PLC via Port 5002/TCP and cause a denial of service, requiring the PLC to be reset to resume operation. This is caused by an Unrestricted Externally Accessible Lock.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02615,"percentile":0.85542,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-662"],"published":"2017-02-13T21:00:00Z","modified":"2026-06-17T00:54:13Z","products":[{"vendor":"mitsubishielectric","product":"qj71e71-100_firmware"},{"vendor":"mitsubishielectric","product":"qj71e71-b2_firmware"},{"vendor":"mitsubishielectric","product":"qj71e71-b5_firmware"}],"references":[{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03","tags":["x_refsource_MISC","x_transferred","Mitigation","Third Party Advisory","US Government Resource"]},{"url":"http://www.securityfocus.com/bid/94632","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-8368"},{"url":"https://github.com/advisories/GHSA-v2rq-g9fx-7mr6"}],"sources":{"cve":[{"id":"CVE-2016-8368","description":"An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all versions, QJ71E71-B5, all versions, and QJ71E71-B2, all versions. The affected Ethernet interface module is connected to a MELSEC-Q PLC, which may allow a remote attacker to connect to the PLC via Port 5002/TCP and cause a denial of service, requiring the PLC to be reset to resume operation. This is caused by an Unrestricted Externally Accessible Lock.","status":"published","published":"2017-02-13T21:00:00Z","modified":"2024-08-06T02:20:31.217Z","updated_at":"2026-11-02T14:33:32.415289Z"}],"euvd":[{"id":"EUVD-2016-9216","description":"An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all versions, QJ71E71-B5, all versions, and QJ71E71-B2, all versions. The affected Ethernet interface module is connected to a MELSEC-Q PLC, which may allow a remote attacker to connect to the PLC via Port 5002/TCP and cause a denial of service, requiring the PLC to be reset to resume operation. This is caused by an Unrestricted Externally Accessible Lock.","status":"published","published":"2017-02-13T21:00:00Z","modified":"2024-08-06T02:20:31Z","updated_at":"2026-11-03T02:22:30.514382Z"}],"ghsa":[{"id":"GHSA-v2rq-g9fx-7mr6","title":"An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface...","description":"An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all versions, QJ71E71-B5, all versions, and QJ71E71-B2, all versions. The affected Ethernet interface module is connected to a MELSEC-Q PLC, which may allow a remote attacker to connect to the PLC via Port 5002/TCP and cause a denial of service, requiring the PLC to be reset to resume operation. This is caused by an Unrestricted Externally Accessible Lock.","status":"published","published":"2022-05-13T01:06:04Z","modified":"2023-02-01T05:02:51Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-662"],"updated_at":"2026-11-02T14:49:58.981291Z"}],"nvd":[{"id":"CVE-2016-8368","description":"An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all versions, QJ71E71-B5, all versions, and QJ71E71-B2, all versions. The affected Ethernet interface module is connected to a MELSEC-Q PLC, which may allow a remote attacker to connect to the PLC via Port 5002/TCP and cause a denial of service, requiring the PLC to be reset to resume operation. This is caused by an Unrestricted Externally Accessible Lock.","status":"published","published":"2017-02-13T21:59:01.173Z","modified":"2026-06-17T00:54:13.933Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-662"],"updated_at":"2026-11-02T14:03:35.822579Z"}]}}