alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS MITRE Caldera Remote Code Execution (CVE-2025-27364)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/file/download"; fast_pattern; http.header; content:"file|3a 20|"; content:"platform|3a 20|"; pcre:"/(?:contact|socket|http)\x3a\x20[^\x0d\x0a]*?extld(?:flags)?/i"; reference:url,nvd.nist.gov/vuln/detail/CVE-2025-27364; reference:cve,2025-27364; classtype:web-application-attack; sid:2060372; rev:2; metadata:attack_target Server, tls_state TLSDecrypt, created_at 2025_02_25, cve CVE_2025_27364, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2025_02_28, reviewed_at 2025_07_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)