What is CVE-2026-44251?

CVE-2026-44251 is a medium-severity vulnerability in Wazuh, classified under Heap-based Buffer Overflow. CVSS score: 6.5/10. Published 2026-07-17.

How severe is CVE-2026-44251?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Buffer overflow in Wazuh

CVE-2026-44251

Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 3.0.0 and above, prior to 4.14.5, a size_t integer underflow in os_crypto/shared/msgs.c:389 allows any enrolled Wazuh agent to crash…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Wazuh — versions >= 3.0.0, < 4.14.5

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow
CWE-191 — Integer Underflow

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-44251?: CVE-2026-44251 is a medium-severity vulnerability in Wazuh, classified under Heap-based Buffer Overflow. CVSS score: 6.5/10. Published 2026-07-17.
How severe is CVE-2026-44251?: Medium severity. CVSS v3 base score is 6.5 out of 10.