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 β02β or before, RJ71PN92 PROFINET IO Controller Module First 2 digits of serial number are β01β or before, RD81DL96 High Speed Data Logger Module First 2 digits of serial number are β08β or before, RD81MES96N MES Interface Module First 2 digits of serial number are β04β or before, and RD81OPC96 OPC UA Server Module First 2 digits of serial number are β04β or before) allows a remote unauthenticated attacker to stop the network functions of the products via a specially crafted packet.
https://jvn.jp/vu/JVNVU92513419/index.html
https://jvn.jp/vu/JVNVU92513419/index.html
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-012.pdf
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-012.pdf
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-012_en.pdf
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-012_en.pdf
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5658