CVE-2023-6374Network attack vector

Unauthenticated module access via replayed login traffic

Published Jan 30, 2024 · Updated Jun 9, 2025

Authentication bypass in Mitsubishi Electric WS0-GETH00200 all serial numbers allows remote attackers to read or alter programs and parameters. The Ethernet interface module accepts previously captured login information when it is replayed, treating the reused network exchange as valid authentication. Access requires sniffing a legitimate login on the module's network; successful replay grants access to disclose or tamper with controller programs and parameters.

CVSS severity5.9
Medium
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Mitsubishi Electric WS0-GETH00200 all serial numbers allows remote attackers to read or alter programs and parameters. The Ethernet interface module accepts previously captured login information when it is replayed, treating the reused network exchange as valid authentication. Access requires sniffing a legitimate login on the module's network; successful replay grants access to disclose or tamper with controller programs and parameters.

The record

CVE
CVE-2023-6374
Published
Jan 30, 2024
Updated
Jun 9, 2025
Vendor
Mitsubishi Electric Corporation
Product
WS0-GETH00200
Classifications
CWE-294, CAPEC-60, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All serial numbers

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mitsubishi Electric Corporation · WS0-GETH00200version=All serial numbers

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5.9Mitsubishi Electric CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-294Authentication Bypass by Capture-replay
CAPEC-60Reusing Session IDs (aka Session Replay)
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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