CVE-2020-5658: High severity Mitsubishielectric Melsec Iq-rj71eip91 Firmware vulnerability
Resource Management Errors 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.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2020-5658?
CVE-2020-5658 is a vulnerability in the TCP/IP function included in the firmware of MELSEC iQ-R series.
Which devices are affected by CVE-2020-5658?
Devices with RJ71EIP91 EtherNet/IP Network Interface Module (first 2 digits of serial number are '02' or before) or RJ71PN92 PROFINET IO Controller Module (first 2 digits of serial number are '01' or before) are affected by CVE-2020-5658.
What is the severity of CVE-2020-5658?
CVE-2020-5658 has a severity rating of 7.5 (high).
How does CVE-2020-5658 affect the MELSEC iQ-R series?
CVE-2020-5658 allows remote attackers to execute arbitrary code via a crafted packet to the TCP/IP function of the affected devices.
How can I fix CVE-2020-5658?
Apply the provided firmware update from Mitsubishi Electric to mitigate the vulnerability.