CVE-2025-59148 HIGH

CVE-2025-59148: Suricata's improper use of entropy keyword can lead to a NULL-ptr deref

Vendor Oisf
Product suricata
Weakness CWE-476
Published October 1, 2025
Last update October 1, 2025

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Versions 8.0.0 and below incorrectly handle the entropy keyword when not anchored to a "sticky" buffer, which can lead to a segmentation fault. This issue is fixed in version 8.0.1. To workaround this issue, users can disable rules using the entropy keyword, or validate they are anchored to a sticky buffer.

Key dates

02Disclosure timeline

October 1, 2025 CVE published
October 1, 2025 Record updated