CVE:CVE-2021-40873
CNNVD:CNNVD-202111-1062
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客户端或服务器发送精心制作的消息来引起拒绝服务(DoS)。服务器进程可能因为双重空闲而意外崩溃，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 edgeconnector to a higher version than 2.31,and avoid the version (,2.31]; 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,); Upgrade softing uagates to a higher version than 1.73,and avoid the version (,1.73); Upgrade softing uatoolkit_embedded to a higher version than 1.40,and avoid the version (,1.40)