CVE-2026-33754 Details
Description
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.
A denial-of-service vulnerability has been identified in Wazuh versions 3.9.0 and above, prior to 4.14.5. The issue allows remote attackers to cause memory exhaustion in the cluster protocol parser by sending a crafted message header with an excessively large payload length. This length is trusted before authentication or decryption, and is used directly to allocate memory, resulting in an unauthenticated denial-of-service condition for the cluster service.
Users can upgrade to Wazuh version 4.14.5 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 17, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9 | CISA-ADP | ExploitVendor Advisory |
| https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wazuh wazuh | >= 3.9.0, < 4.14.5 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 20, 2026 | Initial Analysis | [email protected] |
| Jul 17, 2026 | CVE Modified | CISA-ADP |
| Jul 17, 2026 | New CVE Received | [email protected] |