CVE-2026-33754

Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 3.9.0 and above, prior to 4.14.5, a remote attacker can trigger memory exhaustion in the cluster protocol parser by sending a crafted message header with an arbitrarily large payload length. The length is trusted before authentication/decryption and used directly to allocate memory, allowing unauthenticated denial of service of the cluster service. This issue has been fixed in version 4.14.5.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_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://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9	Exploit Vendor Advisory
https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*

History

20 Jul 2026, 13:31

Type	Values Removed	Values Added
First Time		Wazuh wazuh Wazuh
CPE		cpe:2.3:a:wazuh:wazuh::::::::
References	~~() https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9 -~~	() https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9 - Exploit, Vendor Advisory

17 Jul 2026, 13:18

Type	Values Removed	Values Added
References	~~() https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9 -~~	() https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9 -

17 Jul 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-17 00:16

Updated : 2026-07-20 13:31

NVD link : CVE-2026-33754

Mitre link : CVE-2026-33754

CVE.ORG link : CVE-2026-33754

JSON object : View

Products Affected

wazuh

wazuh

CWE

CWE-400

Uncontrolled Resource Consumption

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