alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS D-Link apply.cgi countdown_time Parameter Buffer Overflow Attempt (CVE-2025-10666)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:10; content:"/apply.cgi"; http.request_body; content:"countdown_time|3d|"; fast_pattern; pcre:"/^[^&]{100,}(?:&|$)/R"; reference:url,github.com/panda666-888/vuls/blob/main/d-link/dir-825/apply.cgi.md#poc; reference:cve,2025-10666; classtype:web-application-attack; sid:2064801; rev:1; metadata:affected_product D_Link, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_09_18, cve CVE_2025_10666, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_09_18, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)