CVE-2026-33754
Wazuh: Unauthenticated cluster packet length leads to uncontrolled memory allocation (remote DoS)
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-400 |
| Vendor | wazuh |
| Product | wazuh |
| Published | Jul 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
wazuh / wazuh
>= 3.9.0, < 4.14.5