ET WEB_SPECIFIC_APPS Microsoft Windows Admin Center Elevation of Privilege (CVE-2026-26119)

Query · suricata

flow:established,to_server;
http.uri;
content:"/api/services/WinREST/Powershell/nodes/InvokeCommand"; fast_pattern;
http.request_body; strip_whitespace;
content:"|22|script|22 3a 22|";
pcre:"/^[^\x22]*?[\x3b\x26\x60\x7c\x24]/R";
http.method;
content:"POST";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS Microsoft Windows Admin Center Elevation of Privilege (CVE-2026-26119) · 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 -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET WEB_SPECIFIC_APPS Microsoft Windows Admin Center Elevation of Privilege (CVE-2026-26119)";
    flow:established,to_server;
    http.uri;
    content:"/api/services/WinREST/Powershell/nodes/InvokeCommand"; fast_pattern;
    http.request_body; strip_whitespace;
    content:"|22|script|22 3a 22|";
    pcre:"/^[^\x22]*?[\x3b\x26\x60\x7c\x24]/R";
    http.method;
    content:"POST";
    reference:url,www.semperis.com/blog/what-you-need-to-know-windows-admin-center-remote-privilege-escalation-cve-2026-26119/;
    reference:cve,2026-26119;
    classtype:attempted-admin;
    sid:2071600; rev:1;
    metadata:attack_target Server, tls_state TLSDecrypt, created_at 2026_08_19, cve CVE_2026_26119, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2026_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;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.