alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET WEB_SPECIFIC_APPS SysAid XML External Entity Injection Attempt (CVE-2025-2775)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/mdm/checkin"; fast_pattern; http.request_body; content:"|3c 3f|xml"; startswith; content:"|3c 21|ENTITY|20 25|"; distance:0; reference:cve,2025-2775; classtype:web-application-attack; sid:2062515; rev:1; metadata:attack_target Server, created_at 2025_05_22, cve CVE_2025_2775, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag AI_Generated_Description, updated_at 2025_05_22, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)