alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Linksys ssid1MACFilter apselect_0 Parameter Command Injection Attempt (CVE-2025-5447)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:22; content:"/goform/ssid1MACFilter"; fast_pattern; http.request_body; content:"apselect_0|3d|"; pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R"; reference:url,github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_10/10.md; reference:cve,2025-5447; classtype:attempted-admin; sid:2064206; rev:1; metadata:affected_product Linksys, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_08_28, cve CVE_2025_5447, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_08_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)