CVE-2026-45767: Oisf Suricata

Medium severity, CVSS 4.4. EPSS: 0.4% chance of exploitation in the next 30 days.

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, a malicious rule could potentially overwrite any file on the file system on rule load or reload. Versions 7.0.16 and 8.0.5 fix the issue. Some workarounds are available. Preprocess `load`+ `save` rules to disallow absolute filenames for save, use Suricata's privilege dropping to limit writable files, and/or configure landlock in suricata.yaml.

Affected products

• Oisf Suricata: from 7.0.0, before 7.0.16 (fixed in 7.0.16); from 8.0.0, before 8.0.5 (fixed in 8.0.5)

Published 2026-09-10. Last modified 2026-09-16.