CVE-2022-25161

What it is

Improper Input Validation vulnerability in Mitsubishi Electric MELSEC iQ-F series FX5U-xMy/z(x=32,64,80, y=T,R, z=ES,DS,ESS,DSS) with serial number 17X**** or later and versions prior to 1.270, Mitsubishi Electric Mitsubishi Electric MELSEC iQ-F series FX5U-xMy/z(x=32,64,80, y=T,R, z=ES,DS,ESS,DSS) with serial number 179**** and prior and versions prior to 1.073, MELSEC iQ-F series FX5UC-xMy/z(x=32,64,96, y=T,R, z=D,DSS) with serial number 17X**** or later and versions prior to 1.270, Mitsubishi Electric MELSEC iQ-F series FX5UC-xMy/z(x=32,64,96, y=T,R, z=D,DSS) with serial number 179**** and prior and versions prior to 1.073, Mitsubishi Electric MELSEC iQ-F series FX5UC-32MT/DS-TS versions prior to 1.270, Mitsubishi Electric MELSEC iQ-F series FX5UC-32MT/DSS-TS versions prior to 1.270, Mitsubishi Electric MELSEC iQ-F series FX5UC-32MR/DS-TS versions prior to 1.270, Mitsubishi Electric MELSEC iQ-F series FX5UJ-xMy/z(x=24,40,60, y=T,R, z=ES,ESS) versions prior to 1.030, Mitsubishi Electric MELSEC iQ-F series FX5UJ-xMy/ES-A(x=24,40,60, y=T,R) versions prior to 1.031 and Mitsubishi Electric MELSEC iQ-F series FX5S-xMy/z(x=30,40,60,80, y=T,R, z=ES,ESS) version 1.000 allows a remote unauthenticated attacker to cause a DoS condition for the product's program execution or communication by sending specially crafted packets. System reset of the product is required for recovery.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

4.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2022-05-18 17:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 04:33 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 4.3% in the next 30 days (EPSS).
• Severity: 8.6 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2022-05-18 17:15 UTC

Last modified

2026-06-17 04:33 UTC

Exploit probability

4.3% · EPSS, next 30 days

Weakness

CWE-20 · Improper input validation

Record status

Modified

Affected

• Mitsubishielectric Melsec iq-fx5u-32mt\/es Firmware < 1.270
• Mitsubishielectric Melsec iq-fx5u-32mt\/ds Firmware < 1.270
• Mitsubishielectric Melsec iq-fx5u-32mt\/ess Firmware < 1.270
• Mitsubishielectric Melsec iq-fx5u-32mt\/dss Firmware < 1.270
• Mitsubishielectric Melsec iq-fx5u-32mr\/es Firmware < 1.270
• Mitsubishielectric Melsec iq-fx5u-32mr\/ds Firmware < 1.270
• Mitsubishielectric Melsec iq-fx5u-32mr\/ess Firmware < 1.270
• Mitsubishielectric Melsec iq-fx5u-32mr\/dss Firmware < 1.270

Attack profile CVSS 3.1 · 8.6

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2022-25161.md and follow it. Check whether this project is affected by CVE-2022-25161. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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