alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Alcatel AP1361D Command Injection in Web Login (CVE-2025-52688)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/echo.fcgi"; fast_pattern; startswith; http.request_body; content:"|22|username|22 3a|"; pcre:"/^\s*\x22[^\x22]*?(?:[\x3b\x24\x27\x60\x7c]|\x25(?:3[bB]|2[47]|60|7[cC]))/R"; reference:url,jro.sg/CVEs/CVE-2025-52688/; reference:cve,2025-52688; classtype:web-application-attack; sid:2063555; rev:1; metadata:attack_target Server, tls_state TLSDecrypt, created_at 2025_07_17, cve CVE_2025_52688, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2025_07_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)