Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability in TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier allows an attacker on the same network segment to stop the network functions or execute malware via a specially crafted packet.

TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier allows remote attackers to bypass access restriction and to stop the network functions or execute malware via a specially crafted packet.

TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier does not properly manage sessions, which allows remote attackers to stop the network functions or execute malware via a specially crafted packet.

Mitsubishi Electric MELSEC C Controller Module and MELIPC Series MI5000 MELSEC-Q Series C Controller Module(Q24DHCCPU-V, Q24DHCCPU-VG User Ethernet port (CH1, CH2): First 5 digits of serial number 21121 or before), MELSEC iQ-R Series C Controller Module / C Intelligent Function Module(R12CCPU-V Ethernet port (CH1, CH2): First 2 digits of serial number 11 or before, and RD55UP06-V Ethernet port: First 2 digits of serial number 08 or before), and MELIPC Series MI5000(MI5122-VW Ethernet port (CH1): First 2 digits of serial number 03 or before, or the firmware version 03 or before) allow remote attackers to cause a denial of service and/or malware being executed via unspecified vectors.

In Mitsubishi Electric MELSEC-Q Series Q03/04/06/13/26UDVCPU: serial number 21081 and prior, Q04/06/13/26UDPVCPU: serial number 21081 and prior, and Q03UDECPU, Q04/06/10/13/20/26/50/100UDEHCPU: serial number 21081 and prior, MELSEC-L Series L02/06/26CPU, L26CPU-BT: serial number 21101 and prior, L02/06/26CPU-P, L26CPU-PBT: serial number 21101 and prior, and L02/06/26CPU-CM, L26CPU-BT-CM: serial number 21101 and prior, a remote attacker can cause the FTP service to enter a denial-of-service condition dependent on the timing at which a remote attacker connects to the FTP server on the above CPU modules.

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. Undocumented hard-coded user passwords for root, ineaadmin, mitsadmin, and maint could allow an attacker to gain unauthorised access to the RTU. (Also, the accounts ineaadmin and mitsadmin are able to escalate privileges to root without supplying a password due to insecure entries in /etc/sudoers on the RTU.)

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. A number of stored cross-site script (XSS) vulnerabilities allow an attacker to inject malicious code directly into the application. An example input variable vulnerable to stored XSS is SerialInitialModemString in the index.php page.

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. Stored cleartext passwords could allow an unauthenticated attacker to obtain configured username and password combinations on the RTU due to the weak credentials management on the RTU. An unauthenticated user can obtain the exposed password credentials to gain access to the following services: DDNS service, Mobile Network Provider, and OpenVPN service.

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. A world-readable /usr/smartrtu/init/settings.xml configuration file on the file system allows an attacker to read sensitive configuration settings such as usernames, passwords, and other sensitive RTU data due to insecure permission assignment.

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. An unauthenticated remote configuration download vulnerability allows an attacker to download the smartRTU's configuration file (which contains data such as usernames, passwords, and other sensitive RTU data).