Vulnerability Details CVE-2026-25772
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 17.5%
CVSS Severity
CVSS v3 Score 4.9
Products affected by CVE-2026-25772
-
cpe:2.3:a:wazuh:wazuh:4.10.0
-
cpe:2.3:a:wazuh:wazuh:4.10.1
-
cpe:2.3:a:wazuh:wazuh:4.10.2
-
cpe:2.3:a:wazuh:wazuh:4.10.3
-
cpe:2.3:a:wazuh:wazuh:4.11.0
-
cpe:2.3:a:wazuh:wazuh:4.11.1
-
cpe:2.3:a:wazuh:wazuh:4.11.2
-
cpe:2.3:a:wazuh:wazuh:4.12.0
-
cpe:2.3:a:wazuh:wazuh:4.13.0
-
cpe:2.3:a:wazuh:wazuh:4.13.1
-
cpe:2.3:a:wazuh:wazuh:4.14.0
-
cpe:2.3:a:wazuh:wazuh:4.14.1
-
cpe:2.3:a:wazuh:wazuh:4.4.0
-
cpe:2.3:a:wazuh:wazuh:4.4.1
-
cpe:2.3:a:wazuh:wazuh:4.4.2
-
cpe:2.3:a:wazuh:wazuh:4.4.3
-
cpe:2.3:a:wazuh:wazuh:4.4.4
-
cpe:2.3:a:wazuh:wazuh:4.4.5
-
cpe:2.3:a:wazuh:wazuh:4.5.0
-
cpe:2.3:a:wazuh:wazuh:4.5.1
-
cpe:2.3:a:wazuh:wazuh:4.5.2
-
cpe:2.3:a:wazuh:wazuh:4.5.3
-
cpe:2.3:a:wazuh:wazuh:4.5.4
-
cpe:2.3:a:wazuh:wazuh:4.6.0
-
cpe:2.3:a:wazuh:wazuh:4.7.0
-
cpe:2.3:a:wazuh:wazuh:4.7.1
-
cpe:2.3:a:wazuh:wazuh:4.7.2
-
cpe:2.3:a:wazuh:wazuh:4.7.3
-
cpe:2.3:a:wazuh:wazuh:4.7.4
-
cpe:2.3:a:wazuh:wazuh:4.7.5
-
cpe:2.3:a:wazuh:wazuh:4.8.0
-
cpe:2.3:a:wazuh:wazuh:4.8.1
-
cpe:2.3:a:wazuh:wazuh:4.8.2
-
cpe:2.3:a:wazuh:wazuh:4.9.0
-
cpe:2.3:a:wazuh:wazuh:4.9.1
-
cpe:2.3:a:wazuh:wazuh:4.9.2