Deserialization in Wazuh
CVE-2026-25769
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (57.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.088 · newest: 0.009 · change: -0.079
Affected products
- Wazuh — versions >= 4.0.0, < 4.14.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/wazuh/wazuh/security/advisories/GHSA-3gm7-962f-fxw5 (Exploit, Vendor Advisory)
- drive.google.com/drive/folders/1WlkKNmHexz8212OVED9O6M_3pI8b6qNI (Broken Link)
Frequently asked questions
- What is CVE-2026-25769?
- CVE-2026-25769 is a critical-severity vulnerability in Wazuh, classified under Deserialization of Untrusted Data. CVSS score: 9.1/10. Published 2026-03-17.
- How severe is CVE-2026-25769?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2026-25769 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.