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CVE-2026-57224

6.5 · MEDIUM

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

Published Sep 18, 2026oisfCWE-400EPSS 0.41%

Overview

CVE-2026-57224 is a medium-severity vulnerability affecting oisf suricata. It was published on September 18, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are 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, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with AppLayerTxData::for_direction(), so a sensor that observes only one direction cannot mark the unseen direction inspected or free completed transactions. The RDP parser in rust/src/rdp/rdp.rs has the same direction-state defect. The per-flow transaction list can grow without bound and cleanup repeatedly scans it, causing increasing CPU and memory consumption and eventual denial of service. 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/3f86c56c800392ede5cfaf7a944a431fd8445c55GitHubgithub.com/OISF/suricata/commit/5af13e3eb06be0387da8703b611c5ce932245c59GitHubgithub.com/OISF/suricata/commit/bac8a69ca48c14582d39a244a87edad44751ebe1GitHubgithub.com/OISF/suricata/commit/ef035c7603293a10c5ad087e3d20b05f75236144GitHubgithub.com/OISF/suricata/pull/15740GitHubgithub.com/OISF/suricata/releases/tag/suricata-8.0.6GitHubgithub.com/OISF/suricata/security/advisories/GHSA-m2vc-g65c-ph7mRefredmine.openinfosecfoundation.org/issues/8621

How CyberStrike helps

Frequently asked questions

What is CVE-2026-57224?

CVE-2026-57224 is a medium-severity vulnerability affecting oisf suricata. It was published on September 18, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-57224?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-57224?

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-2026-57224?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-57224 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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