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CVE-2026-63451

3.3 · LOW

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine.

Published Sep 18, 2026oisfCWE-122EPSS 0.15%

Overview

CVE-2026-63451 is a low-severity vulnerability affecting oisf suricata. It was published on September 18, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

Check the references section for vendor advisories and patches from oisf. Update suricata to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
oisfsuricata>= 8.0.0, < 8.0.6Affected

References

GitHubgithub.com/OISF/suricata/commit/5449ae170bfce213907d9bab87143a59774ed48fGitHubgithub.com/OISF/suricata/commit/d62acf5d75a61b76b16815e773408852f41b1975GitHubgithub.com/OISF/suricata/pull/15807GitHubgithub.com/OISF/suricata/releases/tag/suricata-8.0.6GitHubgithub.com/OISF/suricata/security/advisories/GHSA-6qwq-j83r-qp34Refredmine.openinfosecfoundation.org/issues/8590

How CyberStrike helps

Frequently asked questions

What is CVE-2026-63451?

CVE-2026-63451 is a low-severity vulnerability affecting oisf suricata. It was published on September 18, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).

How severe is CVE-2026-63451?

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-63451?

Check the references section for vendor advisories and patches from oisf. Update suricata to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-63451?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-63451 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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