alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Zyxel ATP Authenticated Remote Code Execution (CVE-2025-8078)"; flow:established,to_server; http.uri; content:"/cgi-bin/zysh-cgi"; fast_pattern; http.request_body; content:"cmd|3d|"; pcre:"/^[^&]*?(?:[\x3b\x24\x60\x7c]|\x25(?:3[bB]|24|60|7[cC]))/R"; http.method; content:"POST"; reference:url,rainpwn.blog/blog/cve-2025-8078/; reference:cve,2025-8078; classtype:web-application-attack; sid:2065977; rev:1; metadata:affected_product Zyxel, attack_target Server, tls_state TLSDecrypt, created_at 2025_12_02, cve CVE_2025_8078, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_02, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)