---
id: CVE-2026-63451
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. From 8.0.0 until 8.0.6, a locally
  supplied detection rule that combines frame inspection without content and a
  transfor…
severity: low
cvss: 3.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-122
vendor: oisf
product: suricata
affected:
  - 'suricata >= 8.0.0, < 8.0.6'
patched:
  - suricata 8.0.6
published: '2026-09-18'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T18:33:00.063'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63451'
references:
  - url: >-
      https://github.com/OISF/suricata/commit/5449ae170bfce213907d9bab87143a59774ed48f
    label: security-advisories@github.com
  - url: >-
      https://github.com/OISF/suricata/commit/d62acf5d75a61b76b16815e773408852f41b1975
    label: security-advisories@github.com
  - url: 'https://github.com/OISF/suricata/pull/15807'
    label: security-advisories@github.com
  - url: 'https://github.com/OISF/suricata/releases/tag/suricata-8.0.6'
    label: security-advisories@github.com
  - url: 'https://github.com/OISF/suricata/security/advisories/GHSA-6qwq-j83r-qp34'
    label: security-advisories@github.com
  - url: 'https://redmine.openinfosecfoundation.org/issues/8590'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-21T16:21:22.661133Z'
ingestedAt: '2026-09-18T20:51:25.797Z'
epss: 0.00149
epssPercentile: 0.04084
---

## Overview

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, a locally supplied detection rule that combines frame inspection without content and a transformed match without content can make src/detect-engine-prefilter.c select multiple non-prefilter frame engines while preparing signatures for non-prefilter inspection. Loading the crafted rule, including in test mode, can trigger a heap buffer overflow and crash Suricata; network traffic alone cannot reach the flaw. This issue is fixed in version 8.0.6.

## Affected

- `suricata >= 8.0.0, < 8.0.6`

## Remediation

Upgrade past the affected range:

- `suricata 8.0.6`