High severity · published Sep 10, 2026
CVE-2026-45766
Suricata nfs: unbounded stateful structures can lead to resource exhaustion
7.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SU
suricata · OISF
>= 8.0.0, < 8.0.5; < 7.0.16 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45766
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45766
Release Notes
https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
Third Party Advisory
https://github.com/OISF/suricata/security/advisories/GHSA-jqr4-ch38-wvm6
Permissions Required
https://redmine.openinfosecfoundation.org/issues/8418
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