ET WEB_SPECIFIC_APPS Cisco ISE ERS API Unauthenticated RCE (CVE-2025-20281)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/deployment-rpc/enableStrongSwanTunnel"; fast_pattern; startswith;
http.request_body;
content:"java.lang.String";
pcre:"/^.*?[\x3b\x7c\x60\x24]/R";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS Cisco ISE ERS API Unauthenticated RCE (CVE-2025-20281) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Cisco ISE ERS API Unauthenticated RCE (CVE-2025-20281)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/deployment-rpc/enableStrongSwanTunnel"; fast_pattern; startswith;
    http.request_body;
    content:"java.lang.String";
    pcre:"/^.*?[\x3b\x7c\x60\x24]/R";
    reference:url,www.zerodayinitiative.com/blog/2025/7/24/cve-2025-20281-cisco-ise-api-unauthenticated-remote-code-execution-vulnerability;
    reference:cve,2025-20281;
    classtype:web-application-attack;
    sid:2063545; rev:2;
    metadata:affected_product Cisco_ISE, attack_target Server, tls_state TLSDecrypt, created_at 2025_07_17, cve CVE_2025_20281, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2025_07_31, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)

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