CVE-2022-33324: Mitsubishi Melipc MI5122-Vw Firmware

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

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.

Affected products

  • Mitsubishi Melipc MI5122-Vw Firmware: any version
  • Mitsubishi Melsec Iq-L l04 Hcpu Firmware: any version
  • Mitsubishi Melsec Iq-L l08 Hcpu Firmware: any version
  • Mitsubishi Melsec Iq-L l16 Hcpu Firmware: any version
  • Mitsubishi Melsec Iq-L l32 Hcpu Firmware: any version
  • Mitsubishi Melsec Iq-R r00 CPU Firmware: before 33.0 (fixed in 33.0)
  • Mitsubishi Melsec Iq-R r01 CPU Firmware: before 33.0 (fixed in 33.0)
  • Mitsubishi Melsec Iq-R r02 CPU Firmware: before 33.0 (fixed in 33.0)
  • Mitsubishi Melsec Iq-R r04 CPU Firmware: before 66.0 (fixed in 66.0)
  • Mitsubishi Melsec Iq-R r04 Sfcpu Firmware: any version
  • Mitsubishi Melsec Iq-R r08 CPU Firmware: before 66.0 (fixed in 66.0)
  • Mitsubishi Melsec Iq-R r08 Sfcpu Firmware: any version
  • Mitsubishi Melsec Iq-R r120 CPU Firmware: before 66.0 (fixed in 66.0)
  • Mitsubishi Melsec Iq-R r120 Sfcpu Firmware: any version
  • Mitsubishi Melsec Iq-R r12 Ccpu-V Firmware: any version
  • Mitsubishi Melsec Iq-R r16 CPU Firmware: before 66.0 (fixed in 66.0)
  • Mitsubishi Melsec Iq-R r16 Sfcpu Firmware: any version
  • Mitsubishi Melsec Iq-R r32 CPU Firmware: before 66.0 (fixed in 66.0)
  • Mitsubishi Melsec Iq-R r32 Sfcpu Firmware: any version

Published 2022-12-23. Last modified 2026-06-17.