CVE-2026-63451

suricata: Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine

CVE-2026-63451 is fixed in suricata on 1 platform by DEBIAN-CVE-2026-63451 (version 1:8.0.6-1), released September 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0015
4th 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.

Where it's fixed

ProductFixed inFixReleased
Linux
suricata · Debian 14 1:8.0.6-1 DEBIAN-CVE-2026-63451 Sep 19, 2026

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