CVE-2026-45769

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{"bugzilla": {"description": "suricata: Suricata: Denial of Service via unbounded IKEv2 parser state", "id": "2531963", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531963"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5,IKEv2 parser state could grow without bounds while storing client transforms. Repeated crafted UDP traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Versions 7.0.16 and 8.0.5 fix the issue. Some workarounds are available. Disable IKE application-layer parsing if it is not needed. Alternatively, use a rule to bypass ike flows after the first packets like `alert ike any any -> any any (sid: 2; flow.pkts_toserver: > 256; bypass; noalert;)`.", "A flaw was found in Suricata, a network Intrusion Detection System (IDS), Intrusion Prevention System (IPS), and Network Security Monitoring engine. A remote attacker can exploit this vulnerability by sending repeated crafted User Datagram Protocol (UDP) traffic to the IKEv2 parser. This can cause the Suricata engine to consume excessive memory, leading to a denial of service (DoS) for the affected system."], "name": "CVE-2026-45769", "public_date": "2026-09-10T21:38:46Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-45769\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-45769\nhttps://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315\nhttps://github.com/OISF/suricata/security/advisories/GHSA-hg2g-r464-5593\nhttps://redmine.openinfosecfoundation.org/issues/8415"], "statement": "The vulnerability in Suricata, rated as Important, allows a remote attacker to cause a denial of service by sending specially crafted UDP traffic. This can lead to unbounded memory growth within the IKEv2 parser, consuming excessive resources and potentially crashing the Suricata engine. This impact is significant in environments where Suricata is deployed for network intrusion detection or prevention.", "threat_severity": "Important"}

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