CVE-2025-34079
HIGHNSClient++ Authenticated Remote Code Execution via ExternalScripts API
CVSS v3
7.8
HIGH
EPSS Score
73.1%
exploit probability
CISA KEV
No
known exploited
Exploitation
poc
SSVC status
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 remot
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 7/2/2025
- Last Modified
- 9/16/2025
Frequently Asked Questions
What is CVE-2025-34079?
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 remot
Is CVE-2025-34079 actively exploited?
A proof-of-concept exploit exists for CVE-2025-34079, but active exploitation has not been confirmed at this time.
What is the CVSS score for CVE-2025-34079?
CVE-2025-34079 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string 3.1.
Is CVE-2025-34079 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.