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CVE-2026-45751

7.5, high

OISF suricata Use-After-Free Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.5, high high CVSS v3.1
EPSS, next 30 days
0.3% higher than 23.2% of scored CVEs
Exploitation
No public evidence
Published
10 Sept 2026a month ago

Description

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.

Details

Vendor
OISF
Product
suricata
Weakness
CWE-416 (opens in a new tab)
Status
Analyzed
Updated
28 Sept 2026
Assigner
security-advisories@github.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References 3

Advisories 1

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other OISF CVEs

Every OISF CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-57228 OISF suricata Out-of-Bounds Read Vulnerability EPSS 0.4% 9.1, critical
  • CVE-2026-63448 OISF suricata Uncontrolled Resource Consumption Vulnerability EPSS 0.4% 7.5, high
  • CVE-2026-71855 Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine EPSS 0.3% 7.5, high

Beyond this page

Is CVE-2026-45751 in your network?

This page tells you how dangerous CVE-2026-45751 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 16 Oct 2026, not the live upstream state.