Vulnerabilites related to nsclient - nsclient\+\+
CVE-2018-6384 (GCVE-0-2018-6384)
Vulnerability from cvelistv5
Published
2018-01-31 16:00
Modified
2024-08-05 06:01
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Unquoted Windows search path vulnerability in NSClient++ before 0.4.1.73 allows non-privileged local users to execute arbitrary code with elevated privileges on the system via a malicious program.exe executable in the %SYSTEMDRIVE% folder.
References
| ▼ | URL | Tags |
|---|---|---|
| https://www.on-x.com/sites/default/files/on-x_-_security_advisory_-_nsclient_-_cve-2018-6384.pdf | x_refsource_MISC | |
| https://nsclient.org/blog/2018/01/30/CVE-2018-6384-0.3.9/ | x_refsource_CONFIRM |
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CVE-2025-34079 (GCVE-0-2025-34079)
Vulnerability from cvelistv5
Published
2025-07-02 19:27
Modified
2025-07-02 19:42
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| NSClient++ | NSClient++ |
Version: 0.5.2.35 |
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CVE-2025-34078 (GCVE-0-2025-34078)
Vulnerability from cvelistv5
Published
2025-07-02 19:27
Modified
2025-07-02 20:32
Severity ?
VLAI Severity ?
EPSS score ?
Summary
A local privilege escalation vulnerability exists in NSClient++ 0.5.2.35 when both the web interface and ExternalScripts features are enabled. The configuration file (nsclient.ini) stores the administrative password in plaintext and is readable by local users. By extracting this password, an attacker can authenticate to the NSClient++ web interface (typically accessible on port 8443) and abuse the ExternalScripts plugin to inject and execute arbitrary commands as SYSTEM by registering a custom script, saving the configuration, and triggering it via the API.
This behavior is documented but insecure, as the plaintext credential exposure undermines access isolation between local users and administrative functions.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| NSClient++ | NSClient++ |
Version: 0.5.2.35 |
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Vulnerability from fkie_nvd
Published
2025-07-02 20:15
Modified
2025-09-17 13:32
Severity ?
Summary
A local privilege escalation vulnerability exists in NSClient++ 0.5.2.35 when both the web interface and ExternalScripts features are enabled. The configuration file (nsclient.ini) stores the administrative password in plaintext and is readable by local users. By extracting this password, an attacker can authenticate to the NSClient++ web interface (typically accessible on port 8443) and abuse the ExternalScripts plugin to inject and execute arbitrary commands as SYSTEM by registering a custom script, saving the configuration, and triggering it via the API.
This behavior is documented but insecure, as the plaintext credential exposure undermines access isolation between local users and administrative functions.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| disclosure@vulncheck.com | https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/local/nscp_pe.rb | Exploit, Third Party Advisory | |
| disclosure@vulncheck.com | https://vulncheck.com/advisories/nsclient-localtoremote-system-compromise | Exploit, Third Party Advisory | |
| disclosure@vulncheck.com | https://www.exploit-db.com/exploits/46802 | Exploit, VDB Entry, Third Party Advisory | |
| disclosure@vulncheck.com | https://www.exploit-db.com/exploits/48360 | Exploit, VDB Entry |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| nsclient | nsclient\+\+ | 0.5.2.35 |
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"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "disclosure@vulncheck.com",
"type": "Secondary"
}
]
},
"published": "2025-07-02T20:15:29.827",
"references": [
{
"source": "disclosure@vulncheck.com",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/local/nscp_pe.rb"
},
{
"source": "disclosure@vulncheck.com",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://vulncheck.com/advisories/nsclient-localtoremote-system-compromise"
},
{
"source": "disclosure@vulncheck.com",
"tags": [
"Exploit",
"VDB Entry",
"Third Party Advisory"
],
"url": "https://www.exploit-db.com/exploits/46802"
},
{
"source": "disclosure@vulncheck.com",
"tags": [
"Exploit",
"VDB Entry"
],
"url": "https://www.exploit-db.com/exploits/48360"
}
],
"sourceIdentifier": "disclosure@vulncheck.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-269"
},
{
"lang": "en",
"value": "CWE-312"
}
],
"source": "disclosure@vulncheck.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-522"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2018-01-31 16:29
Modified
2024-11-21 04:10
Severity ?
Summary
Unquoted Windows search path vulnerability in NSClient++ before 0.4.1.73 allows non-privileged local users to execute arbitrary code with elevated privileges on the system via a malicious program.exe executable in the %SYSTEMDRIVE% folder.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| nsclient | nsclient\+\+ | * |
{
"configurations": [
{
"nodes": [
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"cpeMatch": [
{
"criteria": "cpe:2.3:a:nsclient:nsclient\\+\\+:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BF8C2F42-BB99-4294-8B43-ECC2F78A3629",
"versionEndExcluding": "0.4.1.73",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Unquoted Windows search path vulnerability in NSClient++ before 0.4.1.73 allows non-privileged local users to execute arbitrary code with elevated privileges on the system via a malicious program.exe executable in the %SYSTEMDRIVE% folder."
},
{
"lang": "es",
"value": "Vulnerabilidad de ruta de b\u00fasqueda no entrecomillada en Windows en NSClient++, en versiones anteriores a la 0.4.1.73, permite que usuarios locales no privilegiados ejecuten c\u00f3digo arbitrario con privilegios elevados en el sistema mediante un ejecutable program.exe malicioso en la carpeta %SYSTEMDRIVE%."
}
],
"id": "CVE-2018-6384",
"lastModified": "2024-11-21T04:10:36.517",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.2,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
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"cvssData": {
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2018-01-31T16:29:00.307",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "https://nsclient.org/blog/2018/01/30/CVE-2018-6384-0.3.9/"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://www.on-x.com/sites/default/files/on-x_-_security_advisory_-_nsclient_-_cve-2018-6384.pdf"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://nsclient.org/blog/2018/01/30/CVE-2018-6384-0.3.9/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://www.on-x.com/sites/default/files/on-x_-_security_advisory_-_nsclient_-_cve-2018-6384.pdf"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-428"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2025-07-02 20:15
Modified
2025-09-16 19:53
Severity ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| nsclient | nsclient\+\+ | 0.5.2.35 |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:nsclient:nsclient\\+\\+:0.5.2.35:*:*:*:*:*:*:*",
"matchCriteriaId": "602E0CAC-528A-4B90-9F2E-B8E11BCABE55",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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.\n\nThis capability is an intended feature, but the lack of safeguards or privilege separation makes it risky when exposed to untrusted actors."
},
{
"lang": "es",
"value": "Existe una vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo autenticada en NSClient++ versi\u00f3n 0.5.2.35 cuando la interfaz web y el m\u00f3dulo ExternalScripts est\u00e1n habilitados. Un atacante remoto con la contrase\u00f1a de administrador puede autenticarse en la interfaz web (puerto predeterminado 8443), inyectar comandos arbitrarios como scripts externos mediante la API /settings/query.json, guardar la configuraci\u00f3n y ejecutar el script mediante el endpoint /query/{name}. Los comandos inyectados se ejecutan con privilegios de sistema, lo que permite una vulneraci\u00f3n remota completa. Esta funci\u00f3n es una funci\u00f3n prevista, pero la falta de protecciones o separaci\u00f3n de privilegios la hace peligrosa al exponerse a actores no confiables."
}
],
"id": "CVE-2025-34079",
"lastModified": "2025-09-16T19:53:27.970",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"source": "nvd@nist.gov",
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}
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"cvssMetricV40": [
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"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "disclosure@vulncheck.com",
"type": "Secondary"
}
]
},
"published": "2025-07-02T20:15:29.963",
"references": [
{
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"tags": [
"Exploit"
],
"url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/nscp_authenticated_rce.rb"
},
{
"source": "disclosure@vulncheck.com",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://vulncheck.com/advisories/nsclient-localtoremote-system-compromise"
},
{
"source": "disclosure@vulncheck.com",
"tags": [
"Exploit",
"VDB Entry"
],
"url": "https://www.exploit-db.com/exploits/48360"
}
],
"sourceIdentifier": "disclosure@vulncheck.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-94"
},
{
"lang": "en",
"value": "CWE-306"
}
],
"source": "disclosure@vulncheck.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-94"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}