CVE-2026-45768

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -> any any (sid: 1; ldap.responses.count: >1024; bypass;)`.

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 Vendor Advisory
https://github.com/OISF/suricata/security/advisories/GHSA-cr4x-w4c4-57p7	Third Party Advisory
https://redmine.openinfosecfoundation.org/issues/8405	Permissions Required

Configurations

Configuration 1 (hide)

cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*

History

16 Sep 2026, 18:31

Type	Values Removed	Values Added
First Time		Oisf Oisf suricata
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-cr4x-w4c4-57p7 -~~	() https://github.com/OISF/suricata/security/advisories/GHSA-cr4x-w4c4-57p7 - Third Party Advisory
References	~~() https://redmine.openinfosecfoundation.org/issues/8405 -~~	() https://redmine.openinfosecfoundation.org/issues/8405 - Permissions Required
CPE		cpe:2.3:a:oisf:suricata::::::::

Information

Published : 2026-09-10 22:16

Updated : 2026-09-16 18:31

NVD link : CVE-2026-45768

Mitre link : CVE-2026-45768

CVE.ORG link : CVE-2026-45768

JSON object : View

Products Affected

oisf

suricata

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

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