alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Wing FTP Server NULL-byte Authentication Bypass (CVE-2025-47812)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/loginok.html"; fast_pattern; http.referer; content:"|2f|login.html"; http.request_body; content:"username|3d|"; pcre:"/^[^\x26]*?(?:\x00|\x2500)/R"; reference:url,www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/; reference:cve,2025-47812; classtype:web-application-attack; sid:2063316; rev:1; metadata:attack_target Server, created_at 2025_07_07, cve CVE_2025_47812, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2025_07_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)