Vulnerability Description
Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 4.4.0 and prior to version 4.14.3, a stack-based buffer overflow vulnerability exists in the Wazuh Database synchronization module (`wdb_delta_event.c`). The SQL query construction logic allows for an integer underflow when calculating the remaining buffer size. This occurs because the code incorrectly aggregates the return value of `snprintf`. If a specific database synchronization payload exceeds the size of the query buffer (2048 bytes), the size calculation wraps around to a massive integer, effectively removing bounds checking for subsequent writes. This allows an attacker to corrupt the stack, leading to a Denial of Service (DoS) or potentially RCE. Version 4.14.3 fixes the issue.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wazuh | Wazuh | >= 4.4.0, < 4.14.3 |
Related Weaknesses (CWE)
References
- https://github.com/wazuh/wazuh/security/advisories/GHSA-h7vp-j34v-h6j5ExploitVendor AdvisoryMitigation
FAQ
What is CVE-2026-25772?
CVE-2026-25772 is a vulnerability with a CVSS score of 4.9 (MEDIUM). Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 4.4.0 and prior to version 4.14.3, a stack-based buffer overflow vulnerability exists ...
How severe is CVE-2026-25772?
CVE-2026-25772 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-25772?
Check the references section above for vendor advisories and patch information. Affected products include: Wazuh Wazuh.