CVE-2026-63451

LOW CVSS 3.1: 3.3 EPSS 0.17%
Updated Sep 23, 2026
Suricata
Parameter Value
CVSS 3.3 (LOW)
Fixed In 8.0.6
Type CWE-122 (Heap-based Buffer Overflow)
Vendor Suricata
Public PoC No

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.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption

CVSS Vector v3.1