alert http any any -> $HOME_NET any (msg:"ET HUNTING Generic RPC Endpoint with Auth Header Command Injection Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/rpc"; fast_pattern; http.header; header_lowercase; content:"authorization|3a 20|basic"; pcre:"/^[^\x0d\x0a]*?(?:(?:\x3b|%3[Bb])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R"; reference:url,www.ipbuf.com/static/cve/2025/CVE-2025-67038_en.html; reference:cve,2025-67038; classtype:attempted-admin; sid:2072405; rev:1; metadata:affected_product Lantronix, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_10_09, cve CVE_2025_67038, deployment Perimeter, deployment Internal, performance_impact Moderate, confidence Medium, signature_severity Major, tag Exploit, updated_at 2026_10_09, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)