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…

PriorityP425medium5.5CVSS 3.1

AVLACLPRLUINSUCNINAH

EPSS

0.15%

3.8th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
oisf	suricata	—	—
oisf	suricata	>= 8.0.0 < 8.0.6	8.0.6

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