Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Versions 7.0.11 and below, as well as 8.0.0, are vulnerable to detection bypass when crafted traffic sends multiple SYN packets with different sequence numbers within the same flow tuple, which can cause Suricata to fail to pick up the TCP session. In IDS mode this can lead to a detection and logging bypass. In IPS mode this will lead to the flow getting blocked. This issue is fixed in versions 7.0.12 and 8.0.1.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/OISF/suricata/commit/be6315dba0d9101b11d16e9dacfe2822b3792f1b Patch
- https://github.com/OISF/suricata/commit/e91b03c90385db15e21cf1a0e85b921bf92b039e Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · oisfNVD modified 2026-10-12 15:10
Affected (CPE criteria) 4
cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*cpe:2.3:a:oisf:suricata:8.0.0:-:*:*:*:*:*:*cpe:2.3:a:oisf:suricata:8.0.0:beta1:*:*:*:*:*:*cpe:2.3:a:oisf:suricata:8.0.0:rc1:*:*:*:*:*:*
References 4
- https://forum.suricata.io/t/suricata-8-0-1-and-7-0-12-released/6018 Release Notes
- https://github.com/OISF/suricata/commit/be6315dba0d9101b11d16e9dacfe2822b3792f1b Patch
- https://github.com/OISF/suricata/commit/e91b03c90385db15e21cf1a0e85b921bf92b039e Patch
- https://github.com/OISF/suricata/security/advisories/GHSA-v8hv-6v7x-4c2r Issue Tracking, Third Party Advisory