CVE-2020-5668

Description

Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series modules (R00/01/02CPU firmware version '19' and earlier, R04/08/16/32/120 (EN) CPU firmware version '51' and earlier, R08/16/32/120SFCPU firmware version '22' and earlier, R08/16/32/120PCPU firmware version '25' and earlier, R08/16/32/120PSFCPU firmware version '06' and earlier, RJ71EN71 firmware version '47' and earlier, RJ71GF11-T2 firmware version '47' and earlier, RJ72GF15-T2 firmware version '07' and earlier, RJ71GP21-SX firmware version '47' and earlier, RJ71GP21S-SX firmware version '47' and earlier, and RJ71GN11-T2 firmware version '11' and earlier) allows a remote unauthenticated attacker to cause an error in a CPU unit and cause a denial-of-service (DoS) condition in execution of the program and its communication, or to cause a denial-of-service (DoS) condition in communication via the unit by receiving a specially crafted SLMP packet

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.32% Top 20%
Vendor Advisory co.jp Vendor Advisory mitsubishielectric.com
Affected: Mitsubishi Electric Corporation MELSEC iQ-R
Published at:
Updated at:

References

Link Tags
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-016.pdf vendor advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-016_en.pdf vendor advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-324-05 third party advisory us government resource
https://jvn.jp/vu/JVNVU95980140/index.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-5668?
CVE-2020-5668 has been scored as a high severity vulnerability.
How to fix CVE-2020-5668?
To fix CVE-2020-5668, 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-2020-5668 being actively exploited in the wild?
It is possible that CVE-2020-5668 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-5668?
CVE-2020-5668 affects Mitsubishi Electric Corporation MELSEC iQ-R.
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