CVE:CVE-2021-40871
CNNVD:CNNVD-202111-1060
Softing Industrial Automation OPC是德国Softing Industrial Automation公司的一套OPC（OLE for Process Control，用于过程控制的OLE）解决方案。
Softing Industrial Automation OPC UA c++ SDK存在安全漏洞，该漏洞源于远程攻击者可利用该漏洞通过向OPC UA客户端发送精心制作的消息来引起拒绝服务(DoS)。客户端进程可能因为错误的类型转换而意外崩溃，必须重新启动。
solution:Upgrade softing datafeed_opc_suite to a higher version than 5.18,and avoid the version (,5.18); Upgrade softing opc to a higher version than 5.66,and avoid the version (,5.66); Upgrade softing secure_integration_server to a higher version than 1.22,and avoid the version (,1.22]; softing th_scope avoid the version [3.5,)