Authentication bypass vulnerability in MELSEC iQ-R Series / iQ-F Series EtherNet/IP Modules
Priority LOW 34CWE-259Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-259.
Summary
Use of Hard-coded Password vulnerability in FTP function on Mitsubishi Electric Corporation MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 and MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP allows a remote unauthenticated attacker to obtain a hard-coded password and access to the module via FTP.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00549 46th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mitsubishi Electric Corporation | MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 | all versions | — | No fix listed | CNA |
| Mitsubishi Electric Corporation | MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP | all versions | — | No fix listed | CNA |
- MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 VendorMitsubishi Electric Corporation Affected all versions Fixed in — No fix listed CNA
- MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP VendorMitsubishi Electric Corporation Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:mitsubishielectric:fx5-enet\/ip_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Mitsubishi Electric Europe B.V. |
| cpe:2.3:h:mitsubishielectric:fx5-enet\/ip:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mitsubishi Electric Europe B.V. |
| cpe:2.3:o:mitsubishielectric:sw1dnn-eipct-bd_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Mitsubishi Electric Europe B.V. |
| cpe:2.3:h:mitsubishielectric:sw1dnn-eipct-bd:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mitsubishi Electric Europe B.V. |
| cpe:2.3:o:mitsubishielectric:rj71eip91_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Mitsubishi Electric Europe B.V. |
| cpe:2.3:h:mitsubishielectric:rj71eip91:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mitsubishi Electric Europe B.V. |
| cpe:2.3:o:mitsubishielectric:sw1dnn-eipctfx5-bd_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Mitsubishi Electric Europe B.V. |
| cpe:2.3:h:mitsubishielectric:sw1dnn-eipctfx5-bd:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mitsubishi Electric Europe B.V. |
- cpe:2.3:o:mitsubishielectric:fx5-enet\/ip_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Mitsubishi Electric Europe B.V.
- cpe:2.3:h:mitsubishielectric:fx5-enet\/ip:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mitsubishi Electric Europe B.V.
- cpe:2.3:o:mitsubishielectric:sw1dnn-eipct-bd_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Mitsubishi Electric Europe B.V.
- cpe:2.3:h:mitsubishielectric:sw1dnn-eipct-bd:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mitsubishi Electric Europe B.V.
- cpe:2.3:o:mitsubishielectric:rj71eip91_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Mitsubishi Electric Europe B.V.
- cpe:2.3:h:mitsubishielectric:rj71eip91:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mitsubishi Electric Europe B.V.
- cpe:2.3:o:mitsubishielectric:sw1dnn-eipctfx5-bd_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Mitsubishi Electric Europe B.V.
- cpe:2.3:h:mitsubishielectric:sw1dnn-eipctfx5-bd:-:*:*:*:*:*:*:* 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-2023-2061
- 2026-10-03 Alias added: GHSA-2fjm-qc6m-8q8h
References
More Mitsubishi Electric Corporation vulnerabilities
- TI-2022-14737 Deserialization of untrusted data in Mitsubishi Electric Corporation GENESIS64 CVSS 3.1CRITICAL 9.8
- TI-2022-19113 Authentication Bypass Vulnerability in Web Server Function on MELSEC Series CVSS 3.1CRITICAL 9.1
- TI-2023-01345 Denial-of-Service and Remote Code Execution Vulnerability in MELSEC Series CPU module CVSS 3.1CRITICAL 10.0
- TI-2023-06346 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')… CVSS 3.1CRITICAL 9.8
- TI-2023-03131 Denial of Service (DoS) and Remote Code Execution Vulnerability in MITSUBISHI CNC Series CVSS 3.1CRITICAL 9.8
- TI-2021-03821 Memory corruption in Mitsubishi Electric Corporation CPU Module Logging Configuration Tool CVSS 3.1CRITICAL 9.8
Sources
- CVE-2023-2061 · CVE Program
- CVE-2023-2061 · NVD
- FIRST EPSS
- GHSA-2fjm-qc6m-8q8h · 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