CVE-2026-33754
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductWazuh
PublishedJul 17, 2026
First seenJul 17, 2026
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Update
- wazuh wazuh4.14.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wazuh wazuh | 3.9.0 ≤ v < 4.14.5 | 4.14.5 |
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