alert http any any -> $HOME_NET any (
msg:"ET WEB_SPECIFIC_APPS Phoenix Contact port_util.php portSelect Parameter Cross Site Scripting Attempt (CVE-2025-41749)";
flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/php/port_util.php|3f|"; startswith; fast_pattern;
content:"portSelect|3d|"; distance:0;
pcre:"/^.*(?:on(?:(?:error)|(?:s(?:elec|ubmi)|rese)t|d(?:blclick|ragdrop)|(?:mouse|key)[a-z]|c(?:hange|lick)|(?:un)?load|focus|blur)|s(?:cript|tyle))(?:=|%3[dD])?/Ri";
reference:url,seclists.org/fulldisclosure/2025/Dec/26;
reference:cve,2025-41749;
classtype:attempted-admin;
sid:2066389; rev:1;
metadata:affected_product Phoenix_Contact, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_12_18, cve CVE_2025_41749, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_18, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
target:dest_ip;
)