alert tcp $EXTERNAL_NET any -> $HOME_NET 25 (msg:"ET EXPLOIT Exim SQLite (DBM) Injection (CVE-2025-26794)"; flow:established,to_server; content:"ETRN|20 23|"; startswith; pcre:"/^[^0a]*?[\x27\x22\x3b\x2d\x5c\x2a\x2f]/R"; reference:url,github.com/OscarBataille/CVE-2025-26794; reference:cve,2025-26794; classtype:attempted-user; sid:2060363; rev:1; metadata:affected_product Exim, attack_target Server, created_at 2025_02_25, cve CVE_2025_26794, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2025_02_25, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)