Multiple buffer overflows in Schneider Electric Modicon Quantum PLC allow remote attackers to cause a denial of service via malformed requests to the (1) FTP server or (2) HTTP server.

Cross-site scripting (XSS) vulnerability in Schneider Electric Modicon Quantum PLC allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Schneider Electric Modicon Quantum PLC does not perform authentication between the Unity software and PLC, which allows remote attackers to cause a denial of service or possibly execute arbitrary code via unspecified vectors.

Cross-site request forgery (CSRF) vulnerability on the Schneider Electric Quantum 140NOE77111, 140NOE77101, and 140NWM10000; M340 BMXNOC0401, BMXNOE0100x, and BMXNOE011xx; and Premium TSXETY4103, TSXETY5103, and TSXWMY100 PLC modules allows remote attackers to hijack the authentication of arbitrary users for requests that execute commands, as demonstrated by modifying HTTP credentials.

The FactoryCast service on the Schneider Electric Quantum 140NOE77111 and 140NWM10000, M340 BMXNOE0110x, and Premium TSXETY5103 PLC modules allows remote authenticated users to send Modbus messages, and consequently execute arbitrary code, by embedding these messages in SOAP HTTP POST requests.