CVE-2026-33754 – Wazuh: Unauthenticated cluster packet length leads to uncontrolled memory allocation (remote DoS)

CVE ID :CVE-2026-33754

Published : July 17, 2026, 12:16 a.m. | 1 hour, 19 minutes ago

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.

Severity: 6.5 | MEDIUM

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