CVE-2022-40265

Name: CVE-2022-40265
Creator: NVD / NIST
Published: 2022-11-30T01:15:09.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.94%

Last modified Jun 17, 2026

CVE-2022-40265 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper Input Validation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71 Firmware version "65" and prior and Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU Network Part Firmware version "65" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition by sending specially crafted packets. A system reset is required for recovery.. EPSS estimates a 0.94% chance of exploitation in the next 30 days.

Description

Improper Input Validation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71 Firmware version "65" and prior and Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU Network Part Firmware version "65" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition by sending specially crafted packets. A system reset is required for recovery.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.94%

56.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mitsubishielectric	Rj71en71 Firmware	<= 65
Mitsubishielectric	R04encpu Firmware	<= 65
Mitsubishielectric	R08encpu Firmware	<= 65
Mitsubishielectric	R16encpu Firmware	<= 65
Mitsubishielectric	R32encpu Firmware	<= 65
Mitsubishielectric	R120encpu Firmware	<= 65

References

https://jvn.jp/vu/JVNVU94702422Third Party Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-017_en.pdfVendor Advisory
https://jvn.jp/vu/JVNVU94702422Third Party Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-017_en.pdfVendor Advisory

Timeline

Published: Nov 30, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-40265?

How severe is CVE-2022-40265?

CVE-2022-40265 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.94% probability of exploitation in the next 30 days.

How do I fix CVE-2022-40265?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-40265?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST