---
id: CVE-2026-44251
title: >-
  Wazuh is a free and open source platform used for threat prevention,
  detection, and response
summary: >-
  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 cras…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-122
  - CWE-191
vendor: wazuh
product: wazuh
affected:
  - 'wazuh >= 3.0.0, < 4.14.5'
patched:
  - wazuh 4.14.5
published: '2026-07-17'
updated: '2026-07-20'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-44251'
references:
  - url: 'https://github.com/wazuh/wazuh/security/advisories/GHSA-jv5r-5p7c-g9fq'
    label: security-advisories@github.com
  - url: 'https://github.com/wazuh/wazuh/security/advisories/GHSA-jv5r-5p7c-g9fq'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00444
epssPercentile: 0.3598
ingestedAt: '2026-07-20T02:36:03.332Z'
---

## Overview

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 the wazuh-remoted process on the manager, immediately disconnecting all agents from the manager. A second code path reached by the same underflow may allow heap memory corruption. This issue has been fixed in version 4.14.5.

## Affected

- `wazuh >= 3.0.0, < 4.14.5`

## Remediation

Upgrade past the affected range:

- `wazuh 4.14.5`