alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Netis WF2419 2.2.36123 - Remote Code Execution CVE-2019-19356"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/cgi-bin-igd/netcore_set.cgi"; fast_pattern; http.request_body; content:"tools_ip_url="; pcre:"/^[^&]*?(?:[\x3b\x24\x26\x60\x7c]|\x25(?:25)*(?:3[bB]|2[46]|60|7[cC])|\x5c[rn])/R"; reference:cve,2019-19356; reference:url,www.exploit-db.com/exploits/48149; classtype:attempted-admin; sid:2030278; rev:3; metadata:affected_product Netis, attack_target Networking_Equipment, tls_state plaintext, created_at 2020_06_10, cve CVE_2019_19356, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_11_05, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)