What’s Vulnerable › Vulnerabilities

CVE-2026-45766: Suricata nfs: unbounded stateful structures can lead to resource exhaustion

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-10 · updated 2026-09-16
• Weakness: CWE-400

Description

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.

Affected products

• OISF suricata: from 7.0.0 before 7.0.16; from 8.0.0 before 8.0.5 — fixed in 7.0.16, 8.0.5

How to fix

Upgrade to a fixed version: OISF suricata 7.0.16, 8.0.5. Check the vendor advisory for mitigations.

References

• https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
• https://github.com/OISF/suricata/security/advisories/GHSA-jqr4-ch38-wvm6
• https://redmine.openinfosecfoundation.org/issues/8418

Get alerted when CVE-2026-45766 or the next vulnerability affects your stack