ET EXPLOIT Cisco IOS XE WLC Arbitrary File Upload Attempt (CVE-2025-20188)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/upload/"; fast_pattern;
http.cookie;
content:"jwt=";
content:".";
base64_decode:offset 0,relative;
base64_data;
content:"cdb_token_request_id1";
target:dest_ip;
Raw source ET EXPLOIT Cisco IOS XE WLC Arbitrary File Upload Attempt (CVE-2025-20188) · 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 EXPLOIT Cisco IOS XE WLC Arbitrary File Upload Attempt (CVE-2025-20188)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/upload/"; fast_pattern;
    http.cookie;
    content:"jwt=";
    content:".";
    base64_decode:offset 0,relative;
    base64_data;
    content:"cdb_token_request_id1";
    reference:url,horizon3.ai/attack-research/attack-blogs/cisco-ios-xe-wlc-arbitrary-file-upload-vulnerability-cve-2025-20188-analysis/;
    reference:cve,2025-20188;
    classtype:attempted-admin;
    sid:2062916; rev:1;
    metadata:affected_product Cisco_IOS, attack_target Networking_Equipment, created_at 2025_06_12, cve CVE_2025_20188, deployment Perimeter, deployment Internal, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2025_06_12;
    target:dest_ip;
)

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