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CVE-2026-2043— Nagios Host esensors_websensor_configwizard_func Command Injection Remote Code Execution Vulnerability

Quick assessment

Affected
Nagios Host
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nagios XI是美国Nagios公司的一套IT基础设施监控解决方案。该方案支持对应用、服务、操作系统等进行监控和预警。 Nagios XI存在操作系统命令注入漏洞，该漏洞源于esensors_websensor_configwizard_func方法中缺乏对用户提供字符串的验证，可能导致命令注入和远程代码执行。

AI Predicted 8.2 Difficulty: Easy EPSS 72.91% · P99
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I. Basic Information for CVE-2026-2043

Vulnerability Information
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Vulnerability Title
Nagios Host esensors_websensor_configwizard_func Command Injection Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Nagios Host esensors_websensor_configwizard_func Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Nagios Host. Authentication is required to exploit this vulnerability. The specific flaw exists within the esensors_websensor_configwizard_func method. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-28249.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Nagios XI 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nagios XI是美国Nagios公司的一套IT基础设施监控解决方案。该方案支持对应用、服务、操作系统等进行监控和预警。 Nagios XI存在操作系统命令注入漏洞，该漏洞源于esensors_websensor_configwizard_func方法中缺乏对用户提供字符串的验证，可能导致命令注入和远程代码执行。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Nagios Host 2026R1 -

II. Public POCs for CVE-2026-2043

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III. Intelligence Information for CVE-2026-2043

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Same Patch Batch · Nagios · 2026-02-20 · 3 CVEs total

CVE-2026-2041 Nagios Host zabbixagent_configwizard_func Command Injection Remote Code Execution Vulnerab
CVE-2026-2042 Nagios Host monitoringwizard Command Injection Remote Code Execution Vulnerability

IV. Related Vulnerabilities

Same product: Host
Same vendor: Nagios
Same weakness: CWE-78

V. Comments for CVE-2026-2043

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