What is CVE-2026-40106?

CVE-2026-40106 is a medium-severity vulnerability in Wazuh, classified under Heap-based Buffer Overflow. CVSS score: 4.7/10. Published 2026-07-17.

How severe is CVE-2026-40106?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Buffer overflow in Wazuh

CVE-2026-40106

Wazuh is a free and open source platform used for threat prevention, detection, and response. Versions 4.6.0 and above prior to 4.14.5 contain a heap-based buffer overflow vulnerability in the syscheck component of the Wazuh agent for Wind…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Wazuh — versions >= 4.6.0, < 4.14.5

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-40106?: CVE-2026-40106 is a medium-severity vulnerability in Wazuh, classified under Heap-based Buffer Overflow. CVSS score: 4.7/10. Published 2026-07-17.
How severe is CVE-2026-40106?: Medium severity. CVSS v3 base score is 4.7 out of 10.