alert http any any -> $HOME_NET any (
msg:"ET WEB_SPECIFIC_APPS Nexxt Solutions um_ping_set.cgi Ping_host_text Parameter Command Injection Attempt (CVE-2025-52377)";
flow:established,to_server;
http.method;
content:"POST";
http.uri; bsize:20;
content:"/web/um_ping_set.cgi"; fast_pattern;
http.request_body;
content:"|22|Ping_host_text|22 3a|";
pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R";
reference:url,github.com/Vagebondcur/nexxt-solutions-NCM-X1800-exploits;
reference:cve,2025-52377;
classtype:attempted-admin;
sid:2063494; rev:1;
metadata:affected_product Nexxt, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_07_15, cve CVE_2025_52377, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_07_15, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
target:dest_ip;
)