An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet…
Priority MEDIUM 42CWE-662Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.02615 85th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Mitsubishi Electric MELSEC-Q Series Ethernet Interface Module | Mitsubishi Electric MELSEC-Q Series Ethernet Interface Module | — | No fix listed | CNA |
- Mitsubishi Electric MELSEC-Q Series Ethernet Interface Module Vendor— Affected Mitsubishi Electric MELSEC-Q Series Ethernet Interface Module Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:mitsubishielectric:qj71e71-100_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Mitsubishi Electric Europe B.V. |
| cpe:2.3:h:mitsubishielectric:qj71e71-100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mitsubishi Electric Europe B.V. |
| cpe:2.3:o:mitsubishielectric:qj71e71-b5_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Mitsubishi Electric Europe B.V. |
| cpe:2.3:h:mitsubishielectric:qj71e71-b5:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mitsubishi Electric Europe B.V. |
| cpe:2.3:o:mitsubishielectric:qj71e71-b2_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Mitsubishi Electric Europe B.V. |
| cpe:2.3:h:mitsubishielectric:qj71e71-b2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mitsubishi Electric Europe B.V. |
- cpe:2.3:o:mitsubishielectric:qj71e71-100_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Mitsubishi Electric Europe B.V.
- cpe:2.3:h:mitsubishielectric:qj71e71-100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mitsubishi Electric Europe B.V.
- cpe:2.3:o:mitsubishielectric:qj71e71-b5_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Mitsubishi Electric Europe B.V.
- cpe:2.3:h:mitsubishielectric:qj71e71-b5:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mitsubishi Electric Europe B.V.
- cpe:2.3:o:mitsubishielectric:qj71e71-b2_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Mitsubishi Electric Europe B.V.
- cpe:2.3:h:mitsubishielectric:qj71e71-b2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mitsubishi Electric Europe B.V.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2016-8368
- 2026-10-03 Alias added: GHSA-v2rq-g9fx-7mr6
References
More Mitsubishi Electric Europe B.V. Qj71e71-100 Firmware vulnerabilities
- TI-2020-12755 Mitsubishi Electric Multiple Products CVSS 3.1CRITICAL 9.8
- TI-2019-08196 Uncontrolled resource consumption in Mitsubishi Electric Corporation MELSEC-Q series… CVSS 3.1HIGH 7.5
- TI-2016-06879 Broken or risky cryptographic algorithm in Mitsubishi Electric MELSEC-Q Series Ethernet… CVSS 3.1HIGH 7.5
Sources
- CVE-2016-8368 · CVE Program
- CVE-2016-8368 · NVD
- FIRST EPSS
- GHSA-v2rq-g9fx-7mr6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences