---
id: CVE-2026-45766
title: >-
  Suricata is a network Intrusion Detection System, Intrusion Prevention System
  and Network Security Monitoring engine
summary: >-
  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
  traffi…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
  - CWE-770
vendor: oisf
product: suricata
affected:
  - 'suricata >= 7.0.0, < 7.0.16'
  - 'suricata >= 8.0.0, < 8.0.5'
patched:
  - suricata 8.0.5
published: '2026-09-10'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T20:18:22.197'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45766'
references:
  - url: 'https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315'
    label: security-advisories@github.com
  - url: 'https://github.com/OISF/suricata/security/advisories/GHSA-jqr4-ch38-wvm6'
    label: security-advisories@github.com
  - url: 'https://redmine.openinfosecfoundation.org/issues/8418'
    label: security-advisories@github.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45766.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-45766'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-45766'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45766'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00616
epssPercentile: 0.473
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-11T14:43:21.392634Z'
ingestedAt: '2026-09-12T13:43:50.966Z'
---

## Overview

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

- `suricata >= 7.0.0, < 7.0.16`
- `suricata >= 8.0.0, < 8.0.5`

## Remediation

Upgrade past the affected range:

- `suricata 8.0.5`

## Vendor advisories

- **Red Hat VEX** · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45766.json)