CVE-2020-5652

Description

Uncontrolled resource consumption vulnerability in Ethernet Port on MELSEC iQ-R, Q and L series CPU modules (R 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier , Q 03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions) allows a remote unauthenticated attacker to stop the Ethernet communication functions of the products via a specially crafted packet, which may lead to a denial of service (DoS) condition .

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.20%
Vendor Advisory co.jp Vendor Advisory mitsubishielectric.com
Affected: Mitsubishi Electric Corporation MELSEC iQ-R, Q and L series
Published at:
Updated at:

References

Link Tags
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-013.pdf vendor advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-013_en.pdf vendor advisory
https://jvn.jp/vu/JVNVU96558207/index.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-5652?
CVE-2020-5652 has been scored as a high severity vulnerability.
How to fix CVE-2020-5652?
To fix CVE-2020-5652, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-5652 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-5652 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-5652?
CVE-2020-5652 affects Mitsubishi Electric Corporation MELSEC iQ-R, Q and L series.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.