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CVE-2025-34079— NSClient++ Authenticated Remote Code Execution via ExternalScripts API

Quick assessment

Affected
NSClient++ NSClient++
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.

NSClient++是NSClient开源的一个用于Windows系统的监控代理程序。 NSClient++ 0.5.2.35版本存在安全漏洞，该漏洞源于命令注入，可能导致远程代码执行。

AI Predicted 8.8 Difficulty: Easy EPSS 1.45% · P71

Public Exploits 1

Metasploit · 1 nscp_authenticated_rce.rb [exploit]
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I. Basic Information for CVE-2025-34079

Vulnerability Information
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Vulnerability Title
NSClient++ Authenticated Remote Code Execution via ExternalScripts API
Source: CVE Program / CVE List V5
Vulnerability Description
An authenticated remote code execution vulnerability exists in NSClient++ version 0.5.2.35 when the web interface and ExternalScripts module are enabled. A remote attacker with the administrator password can authenticate to the web interface (default port 8443), inject arbitrary commands as external scripts via the /settings/query.json API, save the configuration, and trigger the script via the /query/{name} endpoint. The injected commands are executed with SYSTEM privileges, enabling full remote compromise. This capability is an intended feature, but the lack of safeguards or privilege separation makes it risky when exposed to untrusted actors.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
NSClient++ 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NSClient++是NSClient开源的一个用于Windows系统的监控代理程序。 NSClient++ 0.5.2.35版本存在安全漏洞，该漏洞源于命令注入，可能导致远程代码执行。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
NSClient++ NSClient++ 0.5.2.35 -

II. Public POCs for CVE-2025-34079

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III. Intelligence Information for CVE-2025-34079

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IV. Related Vulnerabilities

Same product: NSClient++
Same vendor: NSClient++
Same weakness: CWE-94

V. Comments for CVE-2025-34079

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