OISF Suricata up to 7.0.12/8.0.1 heap-based overflow

Summaryinfo

A vulnerability labeled as critical has been found in OISF Suricata up to 7.0.12/8.0.1. This impacts an unknown function. The manipulation results in heap-based overflow. This vulnerability is reported as CVE-2025-64330. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in OISF Suricata up to 7.0.12/8.0.1. It has been classified as critical. Affected is an unknown part. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on availability. CVE summarizes:

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, a single byte read heap overflow when logging the verdict in eve.alert and eve.drop records can lead to crashes. This requires the per packet alert queue to be filled with alerts and then followed by a pass rule. This issue has been patched in versions 7.0.13 and 8.0.2. To reduce the likelihood of this issue occurring, the alert queue size a should be increased (packet-alert-max in suricata.yaml) if verdict is enabled.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-64330 since 10/30/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 276977 (Linux Distros Unpatched Vulnerability : CVE-2025-64330), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.0.13 or 8.0.2 eliminates this vulnerability. Applying the patch 482e5eac9218d007adbe2410d6c00173368ce947 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (276977). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• OISF

Name

• Suricata

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 7.0.12
• 8.0.0
• 8.0.1

License

• open-source

Website

• Product: https://github.com/OISF/suricata/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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