CVE-2020-13238

moderate-risk
Published 2020-06-10

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.

Do I need to act?

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0.30% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (20)

Melsec Iq-R00Cpu Firmware
Melsec Iq-R01Cpu Firmware
Melsec Iq-R02Cpu Firmware
Melsec Iq-R04Cpu Firmware
Melsec Iq-R08Cpu Firmware
Melsec Iq-R16Cpu Firmware
Melsec Iq-R32Cpu Firmware
Melsec Iq-R120Cpu Firmware
Melsec Iq-R08Fcpu Firmware
Melsec Iq-R16Fcpu Firmware
Melsec Iq-R32Fcpu Firmware
Melsec Iq-R120Fcpu Firmware
Melsec Iq-R08Pcpu Firmware
Melsec Iq-R16Pcpu Firmware
Melsec Iq-R32Pcpu Firmware
Melsec Iq-R120Pcpu Firmware
Melsec Iq-R08Sfcpu Firmware
Melsec Iq-R16Sfcpu Firmware
Melsec Iq-R32Sfcpu Firmware
Melsec Iq-R120Sfcpu Firmware

Affected Vendors

Mitsubishielectric

References (6)

Third Party Advisory http://jvn.jp/vu/JVNVU97662844/index.html
Vendor Advisory https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-001_en.pdf
Third Party Advisory https://www.us-cert.gov/ics/advisories/icsa-20-161-02
Third Party Advisory http://jvn.jp/vu/JVNVU97662844/index.html
Vendor Advisory https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-001_en.pdf
Third Party Advisory https://www.us-cert.gov/ics/advisories/icsa-20-161-02
47
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 1/34 · Minimal
Exposure 20/34 · Moderate