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.
https://us-cert.cisa.gov/ics/alerts/ICS-ALERT-12-020-03
https://exchange.xforce.ibmcloud.com/vulnerabilities/72589
https://exchange.xforce.ibmcloud.com/vulnerabilities/72588