ET EXPLOIT HP Poly VVX 450 VoIP Unauthenticated Buffer Overflow (CVE-2026-0826)

Query · suricata

flow:established,to_server;
content:"a|3d|candidate|3a|"; fast_pattern;
pcre:"/^[^\x0d\x0a]{257,}/R";
target:dest_ip;
Raw source ET EXPLOIT HP Poly VVX 450 VoIP Unauthenticated Buffer Overflow (CVE-2026-0826) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert ip any any -> $HOME_NET 5060 (
    msg:"ET EXPLOIT HP Poly VVX 450 VoIP Unauthenticated Buffer Overflow (CVE-2026-0826)";
    flow:established,to_server;
    content:"a|3d|candidate|3a|"; fast_pattern;
    pcre:"/^[^\x0d\x0a]{257,}/R";
    reference:url,www.rapid7.com/blog/post/ve-cve-2026-0826-critical-unauthenticated-stack-buffer-overflow-hp-poly-vvx-trio-voip-phones-fixed/;
    reference:cve,2026-0826;
    classtype:attempted-user;
    sid:2071511; rev:1;
    metadata:attack_target Server, created_at 2026_08_13, cve CVE_2026_0826, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2026_08_13, 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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