NULL pointer dereference in Suricata - CVE-2026-57225
Published: July 22, 2026
Vulnerability identifier: #VU139045
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-57225
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Open Information Security Foundation
Affected software:
Suricata
Suricata
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in JSON/NDJSON dataset loading when loading dataset enrichment files with a configured value_key that contains a non-string JSON value. A local user can supply a specially crafted JSON or NDJSON dataset file to cause a denial of service.
The issue can be triggered during startup, configuration test mode, or rule reload, before traffic processing.
How to mitigate CVE-2026-57225
Install security update from vendor's website.