CVE:CVE-2021-22699
CNNVD:CNNVD-202105-1724
Schneider Electric 存在输入验证错误漏洞，该漏洞源于在V5.1.9.1之前的Modicon M241/M251逻辑控制器固件中存在不正确的输入验证漏洞，攻击者通过精心制作的请求通过HTTP发送给控制器时，可能会导致拒绝服务。
solution:Upgrade schneider-electric modicon_m241_firmware to a higher version than 5.1.9.1,and avoid the version (,5.1.9.1); Upgrade schneider-electric modicon_m251_firmware to a higher version than 5.1.9.1,and avoid the version (,5.1.9.1)