CVE-2026-25769: Wazuh

Critical severity, CVSS 9.1. EPSS: 0.9% chance of exploitation in the next 30 days.

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.

Affected products

• Wazuh Wazuh: from 4.0.0, before 4.14.3 (fixed in 4.14.3)

Published 2026-03-17. Last modified 2026-06-17.