CVE-2021-20610: High severity mitsubishi melsec iq-r r00 cpu firmware vulnerability
Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU Firmware versions "24" and prior, Mitsubishi Electric MELSEC iQ-R Series R04/08/16/32/120(EN)CPU Firmware versions "57" and prior, Mitsubishi Electric MELSEC iQ-R Series R08/16/32/120SFCPU Firmware versions "28" and prior, Mitsubishi Electric MELSEC iQ-R Series R08/16/32/120PCPU Firmware versions "29" and prior, Mitsubishi Electric MELSEC iQ-R Series R08/16/32/120PSFCPU Firmware versions "08" and prior, Mitsubishi Electric MELSEC iQ-R Series R16/32/64MTCPU Operating system software version "23" and prior, Mitsubishi Electric MELSEC iQ-R Series R12CCPU-V Firmware versions "16" and prior, Mitsubishi Electric MELSEC Q Series Q03UDECPU The first 5 digits of serial No. "23121" and prior, Mitsubishi Electric MELSEC Q Series Q04/06/10/13/20/26/50/100UDEHCPU The first 5 digits of serial No. "23121" and prior, Mitsubishi Electric MELSEC Q Series Q03/04/06/13/26UDVCPU The first 5 digits of serial No. "23071" and prior, Mitsubishi Electric MELSEC Q Series Q04/06/13/26UDPVCPU The first 5 digits of serial No. "23071" and prior, Mitsubishi Electric MELSEC Q Series Q12DCCPU-V The first 5 digits of serial No. "24031" and prior, Mitsubishi Electric MELSEC Q Series Q24DHCCPU-V(G) The first 5 digits of serial No. "24031" and prior, Mitsubishi Electric MELSEC Q Series Q24/26DHCCPU-LS The first 5 digits of serial No. "24031" and prior, Mitsubishi Electric MELSEC Q Series MR-MQ100 Operating system software version "F" and prior, Mitsubishi Electric MELSEC Q Series Q172/173DCPU-S1 Operating system software version "W" and prior, Mitsubishi Electric MELSEC Q Series Q172/173DSCPU All versions, Mitsubishi Electric MELSEC Q Series Q170MCPU Operating system software version "W" and prior, Mitsubishi Electric MELSEC Q Series Q170MSCPU(-S1) All versions, Mitsubishi Electric MELSEC L Series L02/06/26CPU(-P) The first 5 digits of serial No. "23121" and prior, Mitsubishi Electric MELSEC L Series L26CPU-(P)BT The first 5 digits of serial No. "23121" and prior and Mitsubishi Electric MELIPC Series MI5122-VW Firmware versions "05" and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending specially crafted packets. System reset is required for recovery.
Other sources
Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU, MELSEC iQ-R Series R08/16/32/120SFCPU, MELSEC iQ-R Series R08/16/32/120PCPU, MELSEC iQ-R Series R08/16/32/120PSFCPU, MELSEC iQ-R Series R16/32/64MTCPU, MELSEC iQ-R Series R12CCPU-V, MELSEC Q Series Q03UDECPU, MELSEC Q Series Q04/06/10/13/20/26/50/100UDEHCPU, MELSEC Q Series Q03/04/06/13/26UDVCPU, MELSEC Q Series Q04/06/13/26UDPVCPU, MELSEC Q Series Q12DCCPU-V, MELSEC Q Series Q24DHCCPU-V(G), MELSEC Q Series Q24/26DHCCPU-LS, MELSEC Q Series MR-MQ100, MELSEC Q Series Q172/173DCPU-S1, MELSEC Q Series Q172/173DSCPU, MELSEC Q Series Q170MCPU, MELSEC Q Series Q170MSCPU(-S1), MELSEC L Series L02/06/26CPU(-P), MELSEC L Series L26CPU-(P)BT and MELIPC Series MI5122-VW 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
Event History
Frequently Asked Questions
What is the severity of CVE-2021-20610?
CVE-2021-20610 has been classified with a high severity level due to its potential impact on the affected Mitsubishi Electric MELSEC iQ-R series firmware.
How do I fix CVE-2021-20610?
To fix CVE-2021-20610, you should update the affected Mitsubishi Electric MELSEC iQ-R series firmware to the latest versions beyond the specified vulnerable versions.
Which versions are affected by CVE-2021-20610?
CVE-2021-20610 affects Mitsubishi Electric MELSEC iQ-R Series firmware versions "24" and prior for R00/01/02 CPUs and "57" and prior for R04/08/16/32/120 CPUs.
What products are impacted by CVE-2021-20610?
CVE-2021-20610 affects various Mitsubishi Electric MELSEC iQ-R Series products including R00, R01, R02, R04, R08, R16, R32, and R120 CPUs.
What is the nature of CVE-2021-20610 vulnerability?
CVE-2021-20610 is caused by improper handling of length parameter inconsistencies, which could lead to potential exploitation by attackers.