ET WEB_SPECIFIC_APPS vBulletin replaceAdTemplate Pre-Auth RCE (CVE-2025-48828 & CVE-2025-48827)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/ajax/api/ad/replaceAdTemplate"; fast_pattern;
http.request_body;
content:"template|3d|";
pcre:"/^[^\x26]*?(?:\x3c|\x253[cC])vb(?:\x3a|\x253[aA])if(?:\x20|\x2520)condition\x3d/R";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS vBulletin replaceAdTemplate Pre-Auth RCE (CVE-2025-48828 & CVE-2025-48827) · 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 vBulletin replaceAdTemplate Pre-Auth RCE (CVE-2025-48828 & CVE-2025-48827)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/ajax/api/ad/replaceAdTemplate"; fast_pattern;
    http.request_body;
    content:"template|3d|";
    pcre:"/^[^\x26]*?(?:\x3c|\x253[cC])vb(?:\x3a|\x253[aA])if(?:\x20|\x2520)condition\x3d/R";
    reference:url,karmainsecurity.com/dont-call-that-protected-method-vbulletin-rce;
    reference:cve,2025-48828;
    reference:cve,2025-48827;
    classtype:web-application-attack;
    sid:2062621; rev:1;
    metadata:affected_product vBulletin, attack_target Server, created_at 2025_05_29, cve CVE_2025_48828_CVE_2025_48827, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Critical, tag Exploit, updated_at 2025_05_29, 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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