---
id: CVE-2026-45747
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 version 7.0.16, the Lua TLS
  certificate information helper could dereference NULL certificate fields when
  a Lu…
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-476
vendor: oisf
product: suricata
affected:
  - suricata < 7.0.16
patched:
  - suricata 7.0.16
published: '2026-09-10'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T18:44:03.710'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45747'
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-vfc5-9844-rmhv'
    label: security-advisories@github.com
  - url: 'https://redmine.openinfosecfoundation.org/issues/6286'
    label: security-advisories@github.com
  - url: 'https://redmine.openinfosecfoundation.org/issues/6286'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-10T16:26:13.719357Z'
ingestedAt: '2026-09-11T14:42:19.870Z'
epss: 0.0042
epssPercentile: 0.36084
---

## Overview

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.

## Affected

- `suricata < 7.0.16`

## Remediation

Upgrade past the affected range:

- `suricata 7.0.16`