alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS TrendNet formFSrvX SZCMD Parameter Command Injection Attempt (CVE-2025-15471)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/goformX/formFSrvX|3f|"; startswith; fast_pattern; content:"OP=Reboot"; content:"SZCMD|3d|"; pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R"; reference:url,pentagonal-time-3a7.notion.site/Command-Injection-Vulnerability-in-formFSrvX-of-Trendnet-TEW-713RE-2d1e5dd4c5a5801481abe7a944763d39; reference:cve,2025-15471; classtype:attempted-admin; sid:2066752; rev:1; metadata:affected_product TrendNet, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_01_14, cve CVE_2025_15471, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_14, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)