CVE-2026-45762

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's IP defragmentation tracker lookup did not verify that an existing tracker used the same IP address family as the packet being processed. Under crafted fragmented IPv4/IPv6 traffic, an IPv6 fragment could be associated with an IPv4 defragmentation tracker. This can lead to a remote packet-triggered crash and denial of service when Suricata performs the relevant defragmentation. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, if using Suricata as an IDS with AF_PACKET, enabling AF_PACKET's `defrag` option may prevent Suricata from seeing such fragmented packets.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315	Release Notes
https://github.com/OISF/suricata/security/advisories/GHSA-gv2j-f6jv-3878	Mitigation Vendor Advisory
https://redmine.openinfosecfoundation.org/issues/8510	Permissions Required

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:oisf:suricata::::::::
	cpe:2.3:a:oisf:suricata::::::::

History

28 Sep 2026, 18:44

Type	Values Removed	Values Added
References	~~() https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315 -~~	() https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315 - Release Notes
References	~~() https://github.com/OISF/suricata/security/advisories/GHSA-gv2j-f6jv-3878 -~~	() https://github.com/OISF/suricata/security/advisories/GHSA-gv2j-f6jv-3878 - Mitigation, Vendor Advisory
References	~~() https://redmine.openinfosecfoundation.org/issues/8510 -~~	() https://redmine.openinfosecfoundation.org/issues/8510 - Permissions Required
First Time		Oisf suricata Oisf
CPE		cpe:2.3:a:oisf:suricata::::::::

Information

Published : 2026-09-10 22:16

Updated : 2026-09-28 18:44

NVD link : CVE-2026-45762

Mitre link : CVE-2026-45762

CVE.ORG link : CVE-2026-45762

JSON object : View

Products Affected

oisf

suricata

CWE

CWE-843

Access of Resource Using Incompatible Type ('Type Confusion')

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