alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Adobe Experience Manager Forms Insecure Deserialization (CVE-2025-49533)"; flow:established,to_server; http.uri; content:"/FormServer/servlet/GetDocumentServlet|3f|"; fast_pattern; startswith; content:"serDoc|3d|"; content:"H4sIAA"; reference:url,slcyber.io/assetnote-security-research-center/struts-devmode-in-2025-critical-pre-auth-vulnerabilities-in-adobe-experience-manager-forms/; reference:cve,2025-49533; classtype:web-application-attack; sid:2064045; rev:1; metadata:affected_product Adobe_Experience_Manager, attack_target Server, tls_state TLSDecrypt, created_at 2025_08_19, cve CVE_2025_49533, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_08_19, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)