Siemens SIPROTEC 5 relays buffer overflow vulnerability (CNVD-2021-71445)

Siemens SIPROTEC 5 is a multifunction relay from Siemens, Germany. Siemens SIPROTEC 5 relays is vulnerable to a buffer overflow vulnerability that could be exploited by an attacker to send a constructed packet to port 4443/TCP, resulting in a denial of service condition.