What’s Vulnerable › Vulnerabilities

CVE-2022-25161

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-18 · updated 2026-06-17
• Weakness: CWE-20

Description

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.

Affected products

• Mitsubhishielectric Melsec Iq-Fx5U-32Mr/Ds Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-32Mr/Dss Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-32Mr/Es Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-32Mr/Ess Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-32Mt/Ds Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-32Mt/Dss Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-32Mt/Es Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-32Mt/Ess Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-64Mr/Ds Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-64Mr/Dss Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-64Mr/Es Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-64Mr/Ess Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-64Mt/Ds Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-64Mt/Dss Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-64Mt/Es Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-64Mt/Ess Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-80Mr/Ds Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-80Mr/Dss Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-80Mr/Es Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-80Mr/Ess Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-80Mt/Ds Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-80Mt/Dss Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-80Mt/Es Firmware: before 1.073 — fixed in 1.073
• Mitsubhishielectric Melsec Iq-Fx5U-80Mt/Ess Firmware: before 1.073 — fixed in 1.073
• Mitsubishielectric Melsec Iq-Fx5S-30Mr/Es Firmware: 1.000
• Mitsubishielectric Melsec Iq-Fx5S-30Mr/Ess Firmware: 1.000
• Mitsubishielectric Melsec Iq-Fx5S-30Mt/Es Firmware: 1.000
• Mitsubishielectric Melsec Iq-Fx5S-30Mt/Ess Firmware: 1.000
• Mitsubishielectric Melsec Iq-Fx5S-40Mr/Es Firmware: 1.000
• Mitsubishielectric Melsec Iq-Fx5S-40Mr/Ess Firmware: 1.000

How to fix

Upgrade to a fixed version: Mitsubhishielectric Melsec Iq-Fx5U-32Mr/Ds Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-32Mr/Dss Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-32Mr/Es Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-32Mr/Ess Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-32Mt/Ds Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-32Mt/Dss Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-32Mt/Es Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-32Mt/Ess Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-64Mr/Ds Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-64Mr/Dss Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-64Mr/Es Firmware 1.073; Mitsubhishielectric Melsec Iq-Fx5U-64Mr/Ess Firmware 1.073. Check the vendor advisory for mitigations.

References

• https://jvn.jp/vu/JVNVU95926817/index.html
• https://www.cisa.gov/uscert/ics/advisories/icsa-22-139-01
• https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-004_en.pdf
• https://jvn.jp/vu/JVNVU95926817/index.html
• https://www.cisa.gov/uscert/ics/advisories/icsa-22-139-01
• https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-004_en.pdf

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