high
7.8
CWE
400
Advisory Published
Updated

CVE-2020-13238

First published: Wed Jun 10 2020(Updated: )

Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial process by sending an unauthenticated crafted packet over the network, because this denial of service attack consumes excessive CPU time. After halting, physical access to the PLC is required in order to restore production.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Mitsubishi Electric Melsec Iq-R00 Firmware<=7
Mitsubishielectric Melsec Iq-r00cpu Firmware
Mitsubishi Electric Melsec Iq-r01cpu Firmware<=7
Mitsubishi Electric MELSEC IQ-R01CPU
Mitsubishi Electric Melsec IQ-R02 Firmware<=7
Mitsubishi Electric MELSEC IQ-R02CPU
Mitsubishi Electric MELSEC iQ-R04CPU<=39
Mitsubishi Electric MELSEC iQ-R04CPU
Mitsubishi Electric Melsec iQ-R08 Firmware<=39
Mitsubishielectric Melsec Iq-r08pcpu
Mitsubishielectric Melsec Iq-r16pcpu Firmware<=39
Mitsubishielectric Melsec Iq-r16cpu Firmware
Mitsubishielectric Melsec Iq-r32cpu Firmware<=39
Mitsubishi Electric Melsec Iq-R32PCPU
Mitsubishi Electric Melsec Iq-R120PCPU Firmware<=39
Mitsubishi Electric Melsec IQ-R120CPU
Mitsubishi Electric Melsec iQ-R08 Firmware<=20
Mitsubishi Electric MELSEC IQ-R08F CPU
Mitsubishi Electric MELSEC IQ-R16FCPU Firmware<=20
Mitsubishi Electric MELSEC IQ-R16FCPU Firmware
Mitsubishi Electric Melsec Iq-R32FCpu Firmware<=20
Mitsubishi Electric MELSEC IQ-R32FCCPU
Mitsubishi Electric Melsec IQ-R120FCpu Firmware<=20
Mitsubishi Electric Melsec IQ-R120 Firmware
Mitsubishi Electric R08PCPU Firmware
Mitsubishi Electric Melsec IQ-R08PCPU Firmware
Mitsubishielectric Melsec Iq-r16pcpu Firmware
Mitsubishi Electric Melsec Iq-R16PCPU
Mitsubishielectric Melsec Iq-r32pcpu Firmware
Mitsubishielectric Melsec Iq-r32pcpu Firmware
Mitsubishi Electric Melsec Iq-R120PCPU Firmware
Mitsubishi Electric Melsec Iq-R120PCPU Firmware
Mitsubishielectric Melsec Iq-r08sfcpu
Mitsubishi Electric Melsec IQ-R08SFC CPU Firmware
Mitsubishi Electric Melsec Iq-R16SFCpu Firmware
Mitsubishi Electric Melsec IQ-R16SFCPU
Mitsubishi Electric Melsec Iq-r32sfcpu
Mitsubishi Electric Melsec Iq-r32sfcpu
Mitsubishi Electric Melsec IQ-R120PSFCPU
Mitsubishi Electric MELSEC iQ-R120
Mitsubishi Electric Melsec IQ-RJ71EN71 Firmware
Mitsubishi Electric Melsec IQ-RJ71EN71 Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2020-13238?

    CVE-2020-13238 is classified as a high severity vulnerability due to its potential to cause a denial of service.

  • How do I fix CVE-2020-13238?

    To mitigate CVE-2020-13238, updating the firmware of the Mitsubishi MELSEC iQ-R Series PLCs to a version that includes the security patch is necessary.

  • What causes the vulnerability CVE-2020-13238?

    CVE-2020-13238 is caused by the PLCs accepting unauthenticated crafted packets that can exhaust CPU resources.

  • What are the risks associated with CVE-2020-13238?

    Exploiting CVE-2020-13238 can lead to halting critical industrial processes, requiring physical access to restore functionality.

  • Which devices are affected by CVE-2020-13238?

    CVE-2020-13238 affects Mitsubishi MELSEC iQ-R Series PLCs with specific firmware versions of 33 and below.

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