CVE:CVE-2021-40368
CNNVD:CNNVD-202204-2941
Siemens SIMATIC S7-400是德国西门子（Siemens）公司的一款用于制造和过程自动化领域的可编程逻辑控制器产品。
Siemens SIMATIC S7-400 CPU 存在缓冲区错误漏洞，该漏洞源于产品缺少对于输入的验证。攻击者利用该漏洞可以进行拒绝服务攻击。
solution:Upgrade siemens simatic_s7-400h_v6_firmware to a higher version than 6.0.10,and avoid the version (,6.0.10); Upgrade siemens simatic_s7-400_pn/dp_v7_firmware to a higher version than *; Upgrade siemens simatic_s7-410_v8_firmware to a higher version than *; Upgrade siemens simatic_s7-410_v10_firmware to a higher version than 10.1,and avoid the version (,10.1)