alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Totolink - Command Injection Attempt Inbound (CVE-2022-26210)"; flow:to_server,established; http.method; content:"POST"; http.uri; content:"/cgi-bin/cstecgi.cgi"; http.request_body; content:"setUpgradeFW"; fast_pattern; content:"FileName|3a 20 3a|"; distance:0; pcre:"/^(?:\x3b|\x0a|\x26|\x60|\x7c|\x24)/R"; reference:cve,2022-26210; classtype:attempted-admin; sid:2035744; rev:2; metadata:attack_target Networking_Equipment, created_at 2022_04_05, cve CVE_2022_26210, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, updated_at 2022_04_05, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;)