CVE-2026-45751

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 inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain `dotprefix` transform after another one.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

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-59q6-j4w8-8pjx	Mitigation Vendor Advisory
https://redmine.openinfosecfoundation.org/issues/8537	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
CPE		cpe:2.3:a:oisf:suricata::::::::
First Time		Oisf suricata Oisf
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-59q6-j4w8-8pjx -~~	() https://github.com/OISF/suricata/security/advisories/GHSA-59q6-j4w8-8pjx - Mitigation, Vendor Advisory
References	~~() https://redmine.openinfosecfoundation.org/issues/8537 -~~	() https://redmine.openinfosecfoundation.org/issues/8537 - Permissions Required

Information

Published : 2026-09-10 21:17

Updated : 2026-09-28 18:44

NVD link : CVE-2026-45751

Mitre link : CVE-2026-45751

CVE.ORG link : CVE-2026-45751

JSON object : View

Products Affected

oisf

suricata

CWE

CWE-416

Use After Free

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