alert tcp any any -> $HOME_NET 6789 (msg:"ET WEB_SPECIFIC_APPS Yi IOT XY-3820 Daemon Service Directory Traversal Attempt"; flow:established,to_server; pcre:"/[^\x26]*?(?:(?:\x2e|%2[Ee]){1,2}(?:\x2f|\x5c|%5[Cc]|%2[Ff]){1,}){2,}/"; content:"/usr/bin/cmd"; fast_pattern; endswith; reference:cve,2025-29660; reference:url,github.com/Yasha-ops/RCE-YiIOT; classtype:attempted-admin; sid:2061774; rev:1; metadata:affected_product IP_Camera, attack_target IoT, tls_state plaintext, created_at 2025_04_21, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_04_21, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)