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

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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.

Published: 2026-03-17 Last update: 2026-03-19 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2026-25769 is rated High Exploit Risk (73.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.46%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2026-25769

EDB-ID Source Kind Published Link
nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2026-25769

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-24 0.44% 0.46% +0.02%
2 2026-04-28 0.26% 0.44% +0.17%
3 2026-04-18 0.26%

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-25769

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
2.3 6.0 [email protected]

Weakness enumeration for CVE-2026-25769

Affected software / configurations for CVE-2026-25769

Vendor Product Version Raw CPE
wazuh wazuh >= 4.0.0, < 4.14.3 cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*

References for CVE-2026-25769

cvelogic Threat Intelligence