CVE:CVE-2021-25666
CNNVD:CNNVD-202102-749
SCALANCE W780 和 W740 中存在安全漏洞，攻击者可通过向目标设备发送特制的ARP数据包导致设备引发拒绝服务。
solution:Upgrade siemens scalance_w780_firmware to a higher version than 6.3,and avoid the version (,6.3); Upgrade siemens scalance_w740_firmware to a higher version than 6.3,and avoid the version (,6.3)