Wazuh up to 4.10.1 buffer underflow

Summaryinfo

A vulnerability classified as problematic was found in Wazuh up to 4.10.1. Affected is an unknown function. Such manipulation leads to buffer underflow. This vulnerability is listed as CVE-2025-62786. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Wazuh up to 4.10.1. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a buffer underflow vulnerability. Using CWE to declare the problem leads to CWE-124. The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer. Impacted is availability. CVE summarizes:

Wazuh is a free and open source platform used for threat prevention, detection, and response. A heap-based out-of-bounds WRITE occurs in decode_win_permissions, resulting in writing a NULL byte 2 bytes before the start of the buffer allocated to decoded_it. A compromised agent can potentially leverage this issue to perform remote code execution, by sending a specially crafted message to the wazuh manager. An attacker who is able to craft and send an agent message to the wazuh manager can leverage this issue to potentially achieve remote code execution on the wazuh manager (the exploitability of this vulnerability depends on the specifics of the respective heap allocator). This vulnerability is fixed in 4.10.2.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-62786 since 10/22/2025. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 4.10.2 eliminates this vulnerability. Applying the patch 2257d7998aaff34263169d16f4afc491564a771c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• Wazuh

Version

• 4.10.0
• 4.10.1

License

• open-source

Website

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

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