Vulnerability · Published Oct 29, 2025 · Assigned by GitHub_M
CVE-2025-62792Wazuh vulnerable to Heap-based Buffer Over-read in w_expression_match
Medium 6.9
In plain English
A medium-severity security flaw in wazuh from wazuh. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Official description
Wazuh is a free and open source platform used for threat prevention, detection, and response. Prior to 4.12.0, a buffer over-read occurs in w_expression_match() when strlen() is called on str_test, because the corresponding buffer is not being properly NULL terminated during its allocation in OS_CleanMSG(). A compromised agent can cause a READ operation beyond the end of the allocated buffer (which may contain sensitive information) 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 cause a buffer over-read and potentially access sensitive data. This vulnerability is fixed in 4.12.0.
Affected products (as reported)
Weakness: CWE-126, CWE-170 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
References
- https://github.com/wazuh/wazuh/security/advisories/GHSA-2672-vfhm-xhr6 x_refsource_CONFIRM