CVE-2021-20609 - Mitsubishi Melsec Iq-r R32 Pcpu Firmware, Mitsubishi Melsec Q172dcpu-s1 Firmware and Mitsubishi Melsec Q13udvcpu Firmware
Uncontrolled Resource Consumption vulnerability in MELSEC iQ-R Series R00/01/02CPU Firmware versions "24" and prior, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU Firmware versions "57" and prior, MELSEC iQ-R Series R08/16/32/120SFCPU All versions, MELSEC iQ-R Series R08/16/32/120PCPU Firmware versions "29" and prior, MELSEC iQ-R Series R08/16/32/120PSFCPU All versions, MELSEC iQ-R Series R16/32/64MTCPU All versions, MELSEC iQ-R Series R12CCPU-V All versions, MELSEC Q Series Q03UDECPU All versions, MELSEC Q Series Q04/06/10/13/20/26/50/100UDEHCPU All versions, MELSEC Q Series Q03/04/06/13/26UDVCPU The first 5 digits of serial No. "23071" and prior, MELSEC Q Series Q04/06/13/26UDPVCPU The first 5 digits of serial No. "23071" and prior, MELSEC Q Series Q12DCCPU-V All versions, MELSEC Q Series Q24DHCCPU-V(G) All versions, MELSEC Q Series Q24/26DHCCPU-LS All versions, MELSEC Q Series MR-MQ100 All versions, MELSEC Q Series Q172/173DCPU-S1 All versions, MELSEC Q Series Q172/172DSCPU All versions, MELSEC Q Series Q170MCPU All versions, MELSEC Q Series Q170MSCPU(-S1) All versions, MELSEC L Series L02/06/26CPU(-P) All versions, MELSEC L Series L26CPU-(P)BT All versions and MELIPC Series MI5122-VW All versions allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending specially crafted packets. System reset is required for recovery.
Affected software
Mitsubishi Melsec Iq-r R32 Pcpu Firmware
Mitsubishi Melsec Q172dcpu-s1 Firmware
Mitsubishi Melsec Q13udvcpu Firmware
Mitsubishi Melsec Iq-r R32 Mtcpu Firmware
Mitsubishi Melsec Iq-r R64 Mtcpu Firmware
Mitsubishi Melsec Iq-r R120 Pcpu Firmware
Mitsubishi Melsec L26cpu-\(p\)bt Firmware
Mitsubishi Melsec L02cpu\(-p\) Firmware
Mitsubishi Melsec Q06udecpu Firmware
Mitsubishi Melsec Iq-r R04 Pcpu Firmware
Mitsubishi Melsec Q24dhccpu-v\(g\) Firmware
Mitsubishi Melsec Iq-r R16 Cpu Firmware
Mitsubishi Melsec Q04udpvcpu Firmware
Mitsubishi Melsec Q170mscpu\(-s1\) Firmware
Mitsubishi Melsec Q10udecpu Firmware
Mitsubishi Melsec L26cpu\(-p\) Firmware
Mitsubishi Melsec Q26udecpu Firmware
Mitsubishi Melsec Iq-r R16 Mtcpu Firmware
Mitsubishi Melsec Q06udvcpu Firmware
Mitsubishi Melsec L06cpu\(-p\) Firmware
Mitsubishi Melsec Q03udecpu Firmware
Mitsubishi Melsec Q13udecpu Firmware
Mitsubishi Melsec Iq-r R04 Cpu Firmware
Mitsubishi Melsec Iq-r R08 Cpu Firmware
Mitsubishi Melsec Iq-r R16 Pcpu Firmware
Mitsubishi Melsec Q50udecpu Firmware
Mitsubishi Melsec Mr-mq100 Firmware
Mitsubishi Melsec Q173dscpu Firmware
Mitsubishi Melsec Iq-r R02 Cpu Firmware
Mitsubishi Melsec Iq-r R01 Cpu Firmware
Mitsubishi Melsec Iq-r R08 Sfcpu Firmware
Mitsubishi Melsec Q12dccpu-v Firmware
Mitsubishi Melsec Q04udvcpu Firmware
Mitsubishi Melsec Iq-r R120 Sfcpu Firmware
Mitsubishi Melsec Iq-r R120 Cpu Firmware
Mitsubishi Melsec Iq-r R16 Sfcpu Firmware
Mitsubishi Melsec Q20udecpu Firmware
Mitsubishi Melsec Q26udvcpu Firmware
Mitsubishi Melsec Q24dhccpu-ls Firmware
Mitsubishi Melsec Q13udpvcpu Firmware
Mitsubishi Melsec Iq-r R00 Cpu Firmware
Mitsubishi Melsec Q04udecpu Firmware
Mitsubishi Melsec Q173dcpu-s1 Firmware
Mitsubishi Melsec Iq-r R08 Pcpu Firmware
Mitsubishi Melsec Iq-r R12 Ccpu-v Firmware
Mitsubishi Melsec Q26dhccpu-ls Firmware
Mitsubishi Melsec Q170mcpu Firmware
Mitsubishi Melsec Q03udvcpu Firmware
Mitsubishi Melsec Q172dscpu Firmware
Mitsubishi Melipc Mi5122-vw Firmware
Mitsubishi Melsec Iq-r R32 Sfcpu Firmware
Mitsubishi Melsec Q06udpvcpu Firmware
Mitsubishi Melsec Iq-r R32 Cpu Firmware
Mitsubishi Melsec Q26udpvcpu Firmware
Mitsubishi Melsec Q100udecpu Firmware