CVE-2020-13238

HIGH
7.5
CVSS Score
Published: June 10, 2020 at 07:53 PM UTC
Updated: June 17, 2026 at 02:52 AM UTC
42 products affected across 1 vendorMELSEC Iq R02CPU FirmwareMELSEC Iq R120SFCPU FirmwareMELSEC Iq R00CPU Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 3%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 7
mitsubishielectric-melsec-iq-r00cpu (same device)
v ≤ 7
mitsubishielectric-melsec-iq-r01cpu (same device)
v ≤ 7
mitsubishielectric-melsec-iq-r02cpu (same device)
v ≤ 39
mitsubishielectric-melsec-iq-r04cpu (same device)
v ≤ 39
mitsubishielectric-melsec-iq-r08cpu (same device)
v ≤ 20
mitsubishielectric-melsec-iq-r08fcpu (same device)
All versions
mitsubishielectric-melsec-iq-r08pcpu (same device)
All versions
mitsubishielectric-r08sfcpu (same device)
v ≤ 39
mitsubishielectric-melsec-iq-r120cpu (same device)
v ≤ 20
mitsubishielectric-melsec-iq-r120fcpu (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

x_refsource_MISCThird Party Advisory
http://jvn.jp/vu/JVNVU97662844/index.html
x_refsource_MISCThird Party AdvisoryUS Government Resource
https://www.us-cert.gov/ics/advisories/icsa-20-161-02

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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