Wazuh up to 4.14.2 ossec.conf path traversal

Summaryinfo

A vulnerability marked as critical has been reported in Wazuh up to 4.14.2. Affected is an unknown function of the file /var/ossec/etc/ossec.conf. The manipulation leads to path traversal. This vulnerability is listed as CVE-2026-25770. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Wazuh up to 4.14.2 and classified as critical. This issue affects an unknown code of the file /var/ossec/etc/ossec.conf. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 3.9.0 and prior to version 4.14.3, a privilege escalation vulnerability exists in the Wazuh Manager's cluster synchronization protocol. The `wazuh-clusterd` service allows authenticated nodes to write arbitrary files to the manager’s file system with the permissions of the `wazuh` system user. Due to insecure default permissions, the `wazuh` user has write access to the manager's main configuration file (`/var/ossec/etc/ossec.conf`). By leveraging the cluster protocol to overwrite `ossec.conf`, an attacker can inject a malicious `<localfile>` command block. The `wazuh-logcollector` service, which runs as root, parses this configuration and executes the injected command. This chain allows an attacker with cluster credentials to gain full Root Remote Code Execution, violating the principle of least privilege and bypassing the intended security model. Version 4.14.3 fixes the issue.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-25770 since 02/05/2026. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are necessary for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 4.14.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-0771). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Open Source Wazuh

Productinfo

Name

• Wazuh

Version

• 4.14.0
• 4.14.1
• 4.14.2

Website

• Product: https://github.com/wazuh/wazuh/

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