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CVE-2022-25163

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-06-02 · updated 2026-06-17
• Weakness: CWE-20

Description

Improper Input Validation vulnerability in Mitsubishi Electric MELSEC-Q Series QJ71E71-100 first 5 digits of serial number "24061" or prior, Mitsubishi Electric MELSEC-L series LJ71E71-100 first 5 digits of serial number "24061" or prior and Mitsubishi Electric MELSEC iQ-R Series RD81MES96N firmware version "08" or prior allows a remote unauthenticated attacker to cause a denial of service (DoS) condition or execute malicious code on the target products by sending specially crafted packets.

Affected products

• Mitsubishi Melsec Iq-R Rd81Mes96N Firmware: before 09 — fixed in 09
• Mitsubishi Melsec Lj71E71-100 Firmware: before 24062 — fixed in 24062
• Mitsubishi Melsec Qj71E71-100 Firmware: before 24062 — fixed in 24062

How to fix

Upgrade to a fixed version: Mitsubishi Melsec Iq-R Rd81Mes96N Firmware 09; Mitsubishi Melsec Lj71E71-100 Firmware 24062; Mitsubishi Melsec Qj71E71-100 Firmware 24062. Check the vendor advisory for mitigations.

References

• https://jvn.jp/vu/JVNVU92561747/index.html
• https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-006_en.pdf
• https://jvn.jp/vu/JVNVU92561747/index.html
• https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-006_en.pdf

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