CVE-2026-25770— Wazuh has Privilege Escalation to Root via Cluster Protocol File Write
Quick assessment
Affected
wazuh wazuh
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Wazuh是Wazuh开源的一个应用软件。用于收集，汇总，索引和分析安全数据，帮助组织检测入侵，威胁和行为异常。 Wazuh 3.9.0至4.14.3之前版本存在安全漏洞，该漏洞源于集群同步协议存在权限提升问题，可能导致攻击者获得完整的Root远程代码执行权限。
Possible ATT&CK Techniques 3 AI
T1068 · Exploitation for Privilege Escalation T1190 · Exploit Public-Facing Application T1546.004 · Unix Shell Configuration Modification
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I. Basic Information for CVE-2026-25770
Vulnerability Information
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Vulnerability Title
Wazuh has Privilege Escalation to Root via Cluster Protocol File Write
Source: CVE Program / CVE List V5
Vulnerability Description
Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 3.9.0 and prior to version 4.14.3, a privilege escalation vulnerability exists in the Wazuh Manager's cluster synchronization protocol. The `wazuh-clusterd` service allows authenticated nodes to write arbitrary files to the manager’s file system with the permissions of the `wazuh` system user. Due to insecure default permissions, the `wazuh` user has write access to the manager's main configuration file (`/var/ossec/etc/ossec.conf`). By leveraging the cluster protocol to overwrite `ossec.conf`, an attacker can inject a malicious `<localfile>` command block. The `wazuh-logcollector` service, which runs as root, parses this configuration and executes the injected command. This chain allows an attacker with cluster credentials to gain full Root Remote Code Execution, violating the principle of least privilege and bypassing the intended security model. Version 4.14.3 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Wazuh 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wazuh是Wazuh开源的一个应用软件。用于收集，汇总，索引和分析安全数据，帮助组织检测入侵，威胁和行为异常。 Wazuh 3.9.0至4.14.3之前版本存在安全漏洞，该漏洞源于集群同步协议存在权限提升问题，可能导致攻击者获得完整的Root远程代码执行权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
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Affected Products
II. Public POCs for CVE-2026-25770
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-25770 (1)
Same Patch Batch · wazuh · 2026-03-17 · 5 CVEs total
| CVE-2026-25769 | 9.1 CRITICAL | Wazuh Cluster vulnerable to Remote Code Execution via Insecure Deserialization |
| CVE-2026-25771 | 5.3 MEDIUM | Wazuh Vulnerable to Denial of Service via Synchronous I/O Blocking in Asynchronous Authent |
| CVE-2026-25772 | 4.9 MEDIUM | Wazuh Database Synchronization Vulnerable to Stack-based Buffer Overflow via snprintf Inte |
| CVE-2026-25790 | 4.9 MEDIUM | Wazuh has Stack-Based Buffer Overflow in Security Configuration Assessment JSON Parser |
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