Vulnerability Details CVE-2026-63451
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, a locally supplied detection rule that combines frame inspection without content and a transformed match without content can make src/detect-engine-prefilter.c select multiple non-prefilter frame engines while preparing signatures for non-prefilter inspection. Loading the crafted rule, including in test mode, can trigger a heap buffer overflow and crash Suricata; network traffic alone cannot reach the flaw. This issue is fixed in version 8.0.6.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 5.8%
CVSS Severity
CVSS v3 Score 3.3
References
- https://github.com/OISF/suricata/commit/5449ae170bfce213907d9bab87143a59774ed48f
- https://github.com/OISF/suricata/commit/d62acf5d75a61b76b16815e773408852f41b1975
- https://github.com/OISF/suricata/pull/15807
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
- https://github.com/OISF/suricata/security/advisories/GHSA-6qwq-j83r-qp34
- https://redmine.openinfosecfoundation.org/issues/8590