alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS UTT ConfigWirelessBase ssid Parameter Buffer Overflow Attempt (CVE-2026-0838)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:26; content:"/goform/ConfigWirelessBase"; fast_pattern; http.request_body; content:"ssid|3d|"; pcre:"/^[^&]{100,}(?:&|$)/R"; reference:url,github.com/Lena-lyy/cve/blob/main/1223/28.md; reference:cve,2026-0838; classtype:web-application-attack; sid:2066680; rev:1; metadata:affected_product UTT, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_01_12, cve CVE_2026_0838, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_12, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)