---
id: CVE-2026-45751
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,
  Suricata's inspection-buffer helper could leave an inspection pointer
  referencing f…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-416
vendor: OISF
product: suricata
affected:
  - suricata < 7.0.16
  - 'suricata >= 8.0.0, < 8.0.5'
published: '2026-09-10'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T16:17:06.520'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45751'
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-59q6-j4w8-8pjx'
    label: security-advisories@github.com
  - url: 'https://redmine.openinfosecfoundation.org/issues/8537'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-11T15:16:16.183696Z'
ingestedAt: '2026-09-13T09:21:27.146Z'
epss: 0.00509
epssPercentile: 0.423
---

## 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, Suricata's inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain `dotprefix` transform after another one.

## Remediation

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