alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS TP-Link WanDynamicIpV6CfgRpm.htm gw Parameter Buffer Overflow Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/userRpm/WanDynamicIpV6CfgRpm.htm"; fast_pattern; http.request_body; content:"gw|3d|"; pcre:"/^[^&]{94,}(?:&|$)/R"; reference:url,lavender-bicycle-a5a.notion.site/TP-Link-TL-WR740N-WanDynamicIpV6CfgRpm-24d53a41781f804f8632fce834ecd69b; classtype:attempted-admin; sid:2071395; rev:2; metadata:affected_product TP_LINK, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_08_05, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2026_08_05, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)