EUVD-2026-75757Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Unauthenticated network-triggerable crash with no code execution or data tampering claimed, so A:H only; C and I set to N since impact is denial of service.
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, a protocol change while processing HTTP/2 traffic could lead to type confusion in Suricata. Crafted traffic may cause Suricata to crash, resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP/2 parsing if it is not required.
AnalysisAI
Denial of service in Suricata IDS/IPS/NSM engine (OISF) affects all versions prior to 7.0.16 and 8.0.5, where a protocol change during HTTP/2 traffic processing triggers a type confusion (CWE-843). Crafted network traffic can crash the Suricata process, disabling network intrusion detection/prevention. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that Suricata be actively inspecting HTTP/2 traffic - i.e., the HTTP/2 app-layer parser must be enabled (the default) and the sensor must see attacker-influenced HTTP/2 flows on a monitored link or inline IPS path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score is 9.1 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H), reflecting unauthenticated, low-complexity network reachability. … 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 | Vendor-released patch: upgrade to Suricata 7.0.16 (for 7.x deployments) or 8.0.5 (for 8.x deployments), per the OISF advisory GHSA-5rvq-72r5-rqhr and the release notes 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, inventory all Suricata deployments and identify systems running versions prior to 7.0.16 (if on the 7.x branch) or 8.0.5 (if on the 8.x branch). …
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Same technique Denial Of Service
View allVendor StatusVendor
SUSE
| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
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