CVE-2021-20600

Description

Uncontrolled resource consumption in Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.62%
Vendor Advisory mitsubishielectric.com
Affected: n/a Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V
Published at:
Updated at:

References

Link Tags
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-015_en.pdf vendor advisory
https://jvn.jp/vu/JVNVU94914666/index.html third party advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-280-04 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2021-20600?
CVE-2021-20600 has been scored as a medium severity vulnerability.
How to fix CVE-2021-20600?
To fix CVE-2021-20600, 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-2021-20600 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20600 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20600?
CVE-2021-20600 affects n/a Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V.
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