CVE-2025-7405Network attack vector

Data tampering and service interruption via unauthenticated Modbus

Published Sep 1, 2025 · Updated Sep 2, 2025

Missing authentication in MELSEC iQ-F Series CPU modules allows remote attackers to read or write device values over Modbus/TCP. The Modbus/TCP service accepts critical read and write requests without performing authentication. Network reachability alone is sufficient; writes can alter device values or stop running control programs.

CVSS severity7.3
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in MELSEC iQ-F Series CPU modules allows remote attackers to read or write device values over Modbus/TCP. The Modbus/TCP service accepts critical read and write requests without performing authentication. Network reachability alone is sufficient; writes can alter device values or stop running control programs.

The record

CVE
CVE-2025-7405
Published
Sep 1, 2025
Updated
Sep 2, 2025
Vendor
Mitsubishi Electric Corporation
Product
MELSEC iQ-F Series FX5UJ-60MR/ES-A
Classifications
CWE-306, T1692.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=All versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-60MR/ES-Aversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-30MR/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-64MR/ESversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-60MT/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-32MT/DSSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-80MR/ESversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-40MT/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-30MT/ESSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-64MT/DSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-80MR/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-60MT/DSSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-32MT/ESSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-60MR/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-60MT/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-40MR/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UC-32MT/Dversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-24MR/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-40MT/DSSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-64MT/DSSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-60MT/DSSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-80MT/DSSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-60MR/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-60MR/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-80MT/ESSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-32MR/DSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-40MT/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-60MT/ESSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-60MT/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-24MT/ESSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-80MT/DSSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-40MR/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-80MT/ESversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UC-32MT/DSSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-32MR/ESversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-40MT/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-64MT/ESSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-60MT/ES-Aversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-32MT/ESversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-40MT/ESSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-64MR/DSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-30MT/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-60MT/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-30MT/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-80MT/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-24MR/ES-Aversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-24MT/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UC-64MT/Dversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UC-32MR/DS-TSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-24MT/ES-Aversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-40MR/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-30MT/DSSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-32MT/DSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-80MT/DSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-60MT/ESSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UC-64MT/DSSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-24MT/DSSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UC-32MT/DS-TSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-80MT/ESSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-80MR/DSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-40MR/ES-Aversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UC-96MT/Dversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5U-64MT/ESversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-24MR/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-40MT/DSSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-40MT/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-40MT/ESSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-30MR/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-40MR/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-80MT/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-24MT/ESversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UC-96MT/DSSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-60MR/DSversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UC-32MT/DSS-TSversion=1.060 and later
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5UJ-40MT/ES-Aversion=All versions
Mitsubishi Electric Corporation · MELSEC iQ-F Series FX5S-80MR/ESversion=All versions

Published CVSS scores

7.3Mitsubishi Electric CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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-306Missing Authentication for Critical Function
T1692.001Unauthorized Message: Command Message

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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