alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Zyxel AMG1302-T10B Directory Traversal Attempt (CVE-2025-3577)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/cgi-bin/pages/maintenance/userAccount/userAccount.html"; fast_pattern; http.cookie; content:"SESSIONID|3d|"; pcre:"/^[^\x26]*?(?:(?:\x2e|%2[Ee]){1,2}(?:\x2f|\x5c|%5[Cc]|%2[Ff]){1,}){2,}/R"; reference:cve,2025-3577; reference:url,github.com/Jiangxiazhe/IOT_Vulnerability/blob/main/README.md; classtype:attempted-admin; sid:2061848; rev:1; metadata:affected_product Zyxel, tls_state plaintext, created_at 2025_04_24, cve CVE_2025_3577, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_04_24, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)