Resource exhaustion in Oisf Suricata
CVE-2026-45766
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, certain NFS parser state structures were insufficiently bounded. Crafted NFS traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable NFS application-layer parsing if it is not needed.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (49.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Oisf Suricata — versions < 7.0.16, >= 8.0.0, < 8.0.5
Weakness classification (CWE)
References
- github.com/OISF/suricata/security/advisories/GHSA-jqr4-ch38-wvm6 (Third Party Advisory)
- forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315 (Release Notes, Vendor Advisory)
- redmine.openinfosecfoundation.org/issues/8418 (Permissions Required)
Frequently asked questions
- What is CVE-2026-45766?
- CVE-2026-45766 is a high-severity vulnerability in Oisf Suricata, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-09-10.
- How severe is CVE-2026-45766?
- High severity. CVSS v3 base score is 7.5 out of 10.