CVE-2022-33324

Name: CVE-2022-33324
Creator: NVD / NIST
Published: 2022-12-23T03:15:08.723+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.67%

Last modified Jun 17, 2026

CVE-2022-33324 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper Resource Shutdown or Release vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series R00/01/02CPU Firmware versions "32" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120(EN)CPU Firmware versions "65" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R08/16/32/120SFCPU Firmware versions "29" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R08/16/32/120PSFCPU Firmware versions "08" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R12CCPU-V Firmware versions "17" and prior, Mitsubishi Electric Corporation MELSEC iQ-L Series L04/08/16/32HCPU Firmware versions "05" and prior and Mitsubishi Electric Corporation MELIPC Series MI5122-VW Firmware versions "07" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition in Ethernet communication on the module by sending specially crafted packets. A system reset of the module is required for recovery.. EPSS estimates a 1.67% chance of exploitation in the next 30 days.

Description

Improper Resource Shutdown or Release vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series R00/01/02CPU Firmware versions "32" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120(EN)CPU Firmware versions "65" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R08/16/32/120SFCPU Firmware versions "29" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R08/16/32/120PSFCPU Firmware versions "08" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R12CCPU-V Firmware versions "17" and prior, Mitsubishi Electric Corporation MELSEC iQ-L Series L04/08/16/32HCPU Firmware versions "05" and prior and Mitsubishi Electric Corporation MELIPC Series MI5122-VW Firmware versions "07" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition in Ethernet communication on the module by sending specially crafted packets. A system reset of the module 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

1.67%

73.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mitsubishi	Melsec Iq-R R00 Cpu Firmware	< 33.0
Mitsubishi	Melsec Iq-R R01 Cpu Firmware	< 33.0
Mitsubishi	Melsec Iq-R R02 Cpu Firmware	< 33.0
Mitsubishi	Melsec Iq-R R04 Cpu Firmware	< 66.0
Mitsubishi	Melsec Iq-R R08 Cpu Firmware	< 66.0
Mitsubishi	Melsec Iq-R R16 Cpu Firmware	< 66.0
Mitsubishi	Melsec Iq-R R32 Cpu Firmware	< 66.0
Mitsubishi	Melsec Iq-R R120 Cpu Firmware	< 66.0
Mitsubishi	Melsec Iq-R R04 Sfcpu Firmware	All versions
Mitsubishi	Melsec Iq-R R08 Sfcpu Firmware	All versions
Mitsubishi	Melsec Iq-R R120 Sfcpu Firmware	All versions
Mitsubishi	Melsec Iq-R R16 Sfcpu Firmware	All versions
Mitsubishi	Melsec Iq-R R32 Sfcpu Firmware	All versions
Mitsubishi	Melsec Iq-R R12 Ccpu-V Firmware	All versions
Mitsubishi	Melipc Mi5122-Vw Firmware	All versions
Mitsubishi	Melsec Iq-L L04 Hcpu Firmware	All versions
Mitsubishi	Melsec Iq-L L08 Hcpu Firmware	All versions
Mitsubishi	Melsec Iq-L L16 Hcpu Firmware	All versions
Mitsubishi	Melsec Iq-L L32 Hcpu Firmware	All versions

References

https://jvn.jp/vu/JVNVU96883262Third Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-22-356-03Patch, Third Party Advisory, US Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-018_en.pdfVendor Advisory
https://jvn.jp/vu/JVNVU96883262Third Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-22-356-03Patch, Third Party Advisory, US Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-018_en.pdfVendor Advisory

Timeline

Published: Dec 23, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-33324?

How severe is CVE-2022-33324?

CVE-2022-33324 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.

How do I fix CVE-2022-33324?

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-2022-33324?

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

Scan your code now

Source: NVD / NIST