alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Tenda SetUpnpCfg upnpEn Parameter Buffer Overflow Attempt (CVE-2025-11327)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:18; content:"/goform/SetUpnpCfg"; fast_pattern; http.request_body; content:"upnpEn|3d|"; pcre:"/^[^&]{100,}(?:&|$)/R"; reference:url,github.com/noahze01/IoT-vulnerable/blob/main/Tenda/AC18/SetUpnpCfg.md; reference:cve,2025-11327; classtype:web-application-attack; sid:2065062; rev:1; metadata:affected_product Tenda, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_10_06, cve CVE_2025_11327, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_06, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)