TI-2023-05850 Aliases CVE-2023-6374 GHSA-v334-55hv-wvc6

Authentication bypass by capture-replay in Mitsubishi Electric Corporation MELSEC WS…

LOW 34CWE-294Published 2024-01-30 · Updated 2025-06-09

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · High · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-294.

Summary

Authentication Bypass by Capture-replay vulnerability in Mitsubishi Electric Corporation MELSEC WS Series WS0-GETH00200 all serial numbers allows a remote unauthenticated attacker to bypass authentication by capture-replay attack and illegally login to the affected module. As a result, the remote attacker who has logged in illegally may be able to disclose or tamper with the programs and parameters in the modules.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00755 55th 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 WS Series WS0-GETH00200	All serial numbers	—	No fix listed	CNA

MELSEC WS Series WS0-GETH00200 VendorMitsubishi Electric Corporation Affected All serial numbers Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:mitsubishielectric:melsec_ws0-geth00200_firmware:-:::::::*	not specified by NVD	Vulnerable	Mitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_ws0-geth00200:-:::::::*	not specified by NVD	Running on	Mitsubishi Electric Europe B.V.

cpe:2.3:o:mitsubishielectric:melsec_ws0-geth00200_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Mitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_ws0-geth00200:-:*:*:*:*:*:*:* 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-2023-6374
2026-10-03 Alias added: GHSA-v334-55hv-wvc6

References

Advisory 3

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

See all 151 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences