EUVD-2026-75789Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable via UDP with no authentication; IKE parsing is default-enabled; impact is availability-only with no confidentiality or integrity loss.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
4DescriptionCVE.org
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;).
AnalysisAI
Uncontrolled memory growth in Suricata's IKEv2 application-layer parser allows remote unauthenticated attackers to exhaust system memory by sending repeated crafted UDP packets, potentially disabling the IDS/IPS/NSM engine entirely. All Suricata releases prior to 7.0.16 and 8.0.5 are affected; the parser accumulates client transform state without any upper bound, making it trivially exploitable from the network. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | IKE application-layer parsing must be enabled in Suricata's configuration (suricata.yaml); this is the default behavior in standard deployments, so no special non-default configuration is required on the victim side. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H scores 7.5 and accurately reflects the attack surface: the vulnerability is reachable over the network, requires no authentication, imposes no special conditions on the attacker, and produces a high-availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to Suricata 7.0.16 (7.x branch) or 8.0.5 (8.x branch) as documented in the OISF advisory GHSA-hg2g-r464-5593 and the release forum post at https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit production Suricata deployments to identify affected versions and verify IKEv2 parsing is enabled (check suricata.yaml configuration). …
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Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suric
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An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
Open Information Security Foundation Suricata prior to version 4.1.3 is affected by: Denial of Service - TCP/HTTP detect
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The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might a
In Suricata before 6.0.13, an adversary who controls an external source of Lua rules may be able to execute Lua code. Ra
Same weakness CWE-400 – Uncontrolled Resource Consumption
View allSame technique Denial Of Service
View allVendor StatusVendor
SUSE
| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
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