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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nsclient | Nsclient\+\+ | 0.5.2.35 |
Related Weaknesses (CWE)
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/expExploit
- https://vulncheck.com/advisories/nsclient-localtoremote-system-compromiseExploitThird Party Advisory
- https://www.exploit-db.com/exploits/48360ExploitVDB Entry
FAQ
What is CVE-2025-34079?
CVE-2025-34079 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 passw...
How severe is CVE-2025-34079?
CVE-2025-34079 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-34079?
Check the references section above for vendor advisories and patch information. Affected products include: Nsclient Nsclient\+\+.