---
id: CVE-2026-45769
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,IKEv2 parser state could grow without bounds while storing client
  transforms. Repeat…
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: '2026-09-16T18:28:27.623'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45769'
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-hg2g-r464-5593'
    label: security-advisories@github.com
  - url: 'https://redmine.openinfosecfoundation.org/issues/8415'
    label: security-advisories@github.com
  - url: 'https://redmine.openinfosecfoundation.org/issues/8415'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45769.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-45769'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-45769'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45769'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - cve.org
  - exploit-available
epss: 0.01787
epssPercentile: 0.77363
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-11T15:55:07.586632Z'
ingestedAt: '2026-09-11T19:57:09.449Z'
---

## 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,IKEv2 parser state could grow without bounds while storing client transforms. Repeated crafted UDP traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Versions 7.0.16 and 8.0.5 fix the issue. Some workarounds are available. Disable IKE application-layer parsing if it is not needed. Alternatively, use a rule to bypass ike flows after the first packets like `alert ike any any -> any any (sid: 2; flow.pkts_toserver: > 256; bypass; noalert;)`.

## 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-2026-45769.json)