CVE-2020-5657: Medium severity Mitsubishielectric Melsec Iq-rj71eip91 Firmware vulnerability
Improper neutralization of argument delimiters in a command ('Argument Injection') 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 unauthenticated attackers on adjacent network to stop the network functions of the products via a specially crafted packet.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2020-5657?
CVE-2020-5657 is a vulnerability related to improper neutralization of argument delimiters in a command ('Argument Injection').
Which software is affected by CVE-2020-5657?
The MELSEC iQ-R series firmware, specifically the RJ71EIP91 EtherNet/IP Network Interface Module and RJ71PN92 PROFINET IO Controller Module, are affected by CVE-2020-5657.
What is the severity of CVE-2020-5657?
CVE-2020-5657 has a severity rating of 6.5 (medium).
How can I fix CVE-2020-5657?
To fix CVE-2020-5657, apply the firmware updates provided by Mitsubishi Electric.
Where can I find more information about CVE-2020-5657?
You can find more information about CVE-2020-5657 on the JVN and Mitsubishi Electric PSIRT websites.