CVE-2020-5655

Description

NULL pointer dereferences vulnerability in TCP/IP function included in the firmware of MELSEC iQ-R series (RJ71EIP91 EtherNet/IP Network Interface Module First 2 digits of serial number are '02' or before, RJ71PN92 PROFINET IO Controller Module First 2 digits of serial number are '01' or before, RD81DL96 High Speed Data Logger Module First 2 digits of serial number are '08' or before, RD81MES96N MES Interface Module First 2 digits of serial number are '04' or before, and RD81OPC96 OPC UA Server Module First 2 digits of serial number are '04' or before) allows a remote unauthenticated attacker to stop the network functions of the products via a specially crafted packet.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.60%
Vendor Advisory co.jp Vendor Advisory mitsubishielectric.com
Affected: Mitsubishi Electric Corporation MELSEC iQ-R series
Published at:
Updated at:

References

Link Tags
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-012.pdf vendor advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-012_en.pdf vendor advisory
https://jvn.jp/vu/JVNVU92513419/index.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-5655?
CVE-2020-5655 has been scored as a high severity vulnerability.
How to fix CVE-2020-5655?
To fix CVE-2020-5655, 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-2020-5655 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-5655 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-2020-5655?
CVE-2020-5655 affects Mitsubishi Electric Corporation MELSEC iQ-R series.
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