TI-2025-36752 Aliases CVE-2025-59147

Suricata is Vulnerable to Detection Bypass via Crafted Multiple SYN Packets

LOW 33CWE-358Published 2025-10-01 · Updated 2025-10-01

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00369 30th percentileScored 2026-11-07

Fix Fixed suricata (OISF): 7.0.12, 8.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OISF	suricata	before 7.0.12; 8.0.0 to before 8.0.1	7.0.12, 8.0.1	Patch available	CNA

suricata VendorOISF Affected before 7.0.12; 8.0.0 to before 8.0.1 Fixed in 7.0.12, 8.0.1 Patch available CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:a:oisf:suricata::::::::	before 7.0.12	Vulnerable	OISF
cpe:2.3:a:oisf:suricata:8.0.0:-::::::	8.0.0	Vulnerable	OISF
cpe:2.3:a:oisf:suricata:8.0.0:beta1::::::	8.0.0 beta1	Vulnerable	OISF
cpe:2.3:a:oisf:suricata:8.0.0:rc1::::::	8.0.0 rc1	Vulnerable	OISF

cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:* Versions before 7.0.12 Vulnerable ·OISF
cpe:2.3:a:oisf:suricata:8.0.0:-:*:*:*:*:*:* Versions 8.0.0 Vulnerable ·OISF
cpe:2.3:a:oisf:suricata:8.0.0:beta1:*:*:*:*:*:* Versions 8.0.0 beta1 Vulnerable ·OISF
cpe:2.3:a:oisf:suricata:8.0.0:rc1:*:*:*:*:*:* Versions 8.0.0 rc1 Vulnerable ·OISF

Remediation

Fix · CNA suricata (OISF) Fixed in 7.0.12, 8.0.1

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2025-59147

References

Patch 2

Advisory 1

https://github.com/OISF/suricata/security/advisories/GHSA-v8hv-6v7x-4c2r

Other 1

https://forum.suricata.io/t/suricata-8-0-1-and-7-0-12-released/6018

TI-2026-33506 ikev2: unbounded client transform storage can lead to resource exhaustion CVSS 3.1HIGH 7.5
TI-2026-33484 Suricata lua/tls: null dereference in TlsGetCertInfo CVSS 3.1HIGH 7.5
TI-2024-31811 Suricata ja4: invalid alpn leads to panic CVSS 3.1HIGH 7.5
TI-2020-13673 Directory Traversal vulnerability found in Pfsense v.2.1.3 and Pfsense Suricata v.1.4.6… CVSS 3.1HIGH 7.5
TI-2023-17928 In Suricata before 6.0.13, an adversary who controls an external source of Lua rules may… CVSS 3.1CRITICAL 9.8
TI-2026-63304 Use after free in OISF Suricata CVSS 3.1CRITICAL 9.4

See all 99 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences