---
id: CVE-2026-54084
title: >-
  Wazuh is an open-source security platform providing unified XDR and SIEM
  protection for endpoints and cloud workloads
summary: >-
  Wazuh is an open-source security platform providing unified XDR and SIEM
  protection for endpoints and cloud workloads. In versions 4.0.0 through
  4.14.6, a malicious or man-in-the-middle enrollment manager can crash a Wazuh
  agent during e…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
vendor: wazuh
product: wazuh
affected:
  - 'wazuh >= 4.0.0, < 4.14.7'
patched:
  - wazuh 4.14.7
published: '2026-08-28'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T19:16:22.553'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54084'
references:
  - url: >-
      https://github.com/wazuh/wazuh/commit/7dfbb4a292bc6ae8e3bb4c1982f687f35216a748
    label: security-advisories@github.com
  - url: 'https://github.com/wazuh/wazuh/security/advisories/GHSA-ppc7-hj9v-vx39'
    label: security-advisories@github.com
  - url: 'https://github.com/wazuh/wazuh/security/advisories/GHSA-ppc7-hj9v-vx39'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00121
epssPercentile: 0.02152
ingestedAt: '2026-09-08T21:11:12.286Z'
---

## Overview

Wazuh is an open-source security platform providing unified XDR and SIEM protection for endpoints and cloud workloads. In versions 4.0.0 through 4.14.6, a malicious or man-in-the-middle enrollment manager can crash a Wazuh agent during enrollment by returning a malformed key response with fewer than four fields, causing a NULL pointer dereference. The  w_enrollment_process_agent_key()  routine splits the manager-provided key into four space-separated fields but does not verify that all fields are present before passing them to validators. Because OS_StrBreak() leaves missing trailing entries as NULL and OS_IsValidName() calls strlen() on its argument without a NULL check, a response such as  OSSEC K:'1'  reaches OS_IsValidName(NULL) and terminates the agent process. Since Wazuh permits enrollment against an unverified manager when no CA certificate is configured, an attacker operating a rogue manager or intercepting the enrollment flow can deterministically crash agents, resulting in denial of service. This issue is fixed in version 4.14.7.

## Affected

- `wazuh >= 4.0.0, < 4.14.7`

## Remediation

Upgrade past the affected range:

- `wazuh 4.14.7`