---
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'
published: '2026-09-18'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T17:17:39.777'
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'
epss: 0.00128
epssPercentile: 0.02832
ingestedAt: '2026-09-18T20:51:25.797Z'
---

## 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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.