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CVE-2026-45762

7.5 · HIGH

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

Published Sep 10, 2026oisfCWE-843EPSS 0.61%

Overview

CVE-2026-45762 is a high-severity vulnerability affecting oisf suricata. It was published on September 10, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. 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. Prior to versions 7.0.16 and 8.0.5, Suricata's IP defragmentation tracker lookup did not verify that an existing tracker used the same IP address family as the packet being processed. Under crafted fragmented IPv4/IPv6 traffic, an IPv6 fragment could be associated with an IPv4 defragmentation tracker. This can lead to a remote packet-triggered crash and denial of service when Suricata performs the relevant defragmentation. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, if using Suricata as an IDS with AF_PACKET, enabling AF_PACKET's `defrag` option may prevent Suricata from seeing such fragmented packets.

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>= 0, < 7.0.16Affected

References

Refforum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315GitHubgithub.com/OISF/suricata/security/advisories/GHSA-gv2j-f6jv-3878Refredmine.openinfosecfoundation.org/issues/8510

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45762?

CVE-2026-45762 is a high-severity vulnerability affecting oisf suricata. It was published on September 10, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-45762?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-45762?

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-2026-45762?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45762 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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