CVE-2026-45761

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, a crafted rule using mixed-case frame syntax could trigger a heap buffer overflow while Suricata is loading signatures. The issue is reached during rule parsing/loading rather than by network traffic alone. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, preprocess rules to check that frames are all lowercase and/or only load trusted rulesets.

CVSS v3 3.3 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315	Release Notes Vendor Advisory
https://github.com/OISF/suricata/security/advisories/GHSA-r74x-74x5-r9vm	Vendor Advisory
https://redmine.openinfosecfoundation.org/issues/8526	Permissions Required

Configurations

Configuration 1 (hide)

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

History

16 Sep 2026, 20:17

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, Vendor Advisory
References	~~() https://github.com/OISF/suricata/security/advisories/GHSA-r74x-74x5-r9vm -~~	() https://github.com/OISF/suricata/security/advisories/GHSA-r74x-74x5-r9vm - Vendor Advisory
References	~~() https://redmine.openinfosecfoundation.org/issues/8526 -~~	() https://redmine.openinfosecfoundation.org/issues/8526 - Permissions Required
CPE		cpe:2.3:a:oisf:suricata::::::::
First Time		Oisf Oisf suricata

Information

Published : 2026-09-10 21:17

Updated : 2026-09-16 20:17

NVD link : CVE-2026-45761

Mitre link : CVE-2026-45761

CVE.ORG link : CVE-2026-45761

JSON object : View

Products Affected

oisf

suricata

CWE

CWE-122

Heap-based Buffer Overflow

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