CVE•Published 2017-02-13•Modified 2026-05-13•1 article on news•4 live references•NVD data

CVE-2016-8368Mitsubishielectric · Qj71e71-100_firmware

Vulnerability data via NVD (ingested)

CVSS v3.1

8.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS percentile

—

Weaknesses (CWE)

CWE-662Improper Synchronization

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.

Timeline

Published 2017-02-13

Modified 2026-05-13

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common). Live host counts are a Premium feature.

Shodan · vuln tag

vuln:CVE-2016-8368

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · OS

os:"Qj71e71-100 Firmware"

Hosts Shodan identified as running Qj71e71-100 Firmware.

More intel sources (5)

Shodan report

vuln:CVE-2016-8368

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2016-8368