alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Cisco IOS XE Web UI Privilege Escalation (CVE-2023-20198)"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"|3c|wsse|3a|UsernameToken"; content:"|3c|config|2d|data|3e|"; content:"|3c|cli|2d|config|2d|data|2d|block|3e|"; fast_pattern; pcre:"/^(?:(?!\x3c\x2fcli).)*\x3c\x21\x5b\s*CDATA\s*\x5b/Rs"; content:"|3c 2f|configApply|3e|"; reference:url,blog.talosintelligence.com/active-exploitation-of-cisco-ios-xe-software/; reference:url,twitter.com/SI_FalconTeam/status/1718346358950711807; reference:cve,2023-20198; classtype:web-application-attack; sid:2048945; rev:5; metadata:affected_product Cisco_IOS, attack_target Networking_Equipment, tls_state TLSDecrypt, created_at 2023_10_30, cve CVE_2023_20198_CVE_2023_20198, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_10_21, reviewed_at 2023_10_30, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)