CVE:CVE-2020-5594
CNNVD:CNNVD-202006-1590
Misubishi Electric MELSEC iQ-R series等都是日本三菱电机（Misubishi Electric）公司的一款可编程逻辑控制器。
多款Mitsubishi Electric产品中存在安全漏洞，该漏洞源于CPU模块与GX Works3或GX Works2之间采用明文通信。攻击者可利用该漏洞窃听/篡改通信数据，执行未授权的操作，造成拒绝服务。以下产品及版本受到影响：Mitsubishi Electric MELSEC iQ-R系列；MELSEC iQ-F系列；MELSEC Q系列；MELSEC L系列；MELSEC FX系列。
solution:Upgrade mitsubishielectric melsec_iq-r_firmware to a higher version than *; Upgrade mitsubishielectric melsec_iq-f_firmware to a higher version than *; Upgrade mitsubishielectric melsec-q_firmware to a higher version than *; Upgrade mitsubishielectric melsec-l_firmware to a higher version than *; Upgrade mitsubishielectric melsec-fx_firmware to a higher version than *