alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Comfast mbox-config timestr Parameter Command Injection Attempt (CVE-2026-77683)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/cgi-bin/mbox-config|3f|"; fast_pattern; content:"method|3d|SET"; content:"section|3d|ntp_timezone"; http.request_body; content:"|22|ntp|5f|client|5f|enabled|22|"; content:"|22|timestr|22|"; pcre:"/^(?:\x3a(?:\x20\x22|\x22))?[^\x2c\x7d$]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R"; reference:url,github.com/AdminSafe/CVE/issues/8; reference:cve,2026-77683; classtype:attempted-admin; sid:2072124; rev:1; metadata:affected_product ComFast, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_09_21, cve CVE_2026_77683, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2026_09_21, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)