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TI-2025-24246 Aliases CVE-2025-34079GHSA-rhrw-79v5-jc5x

NSClient++ Authenticated Remote Code Execution via ExternalScripts API

Priority HIGH 68CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass, Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306 and CWE-94.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01695 77th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NSClient++NSClient++0.5.2.35—No fix listedCNA
  • NSClient++ VendorNSClient++ Affected 0.5.2.35 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nsclient:nsclient\+\+:0.5.2.35:*:*:*:*:*:*:*0.5.2.35VulnerableNSClient++
  • cpe:2.3:a:nsclient:nsclient\+\+:0.5.2.35:*:*:*:*:*:*:* Versions 0.5.2.35 Vulnerable ·NSClient++

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-34079
  2. 2026-10-03 Alias added: GHSA-rhrw-79v5-jc5x

References

Exploit 2

  • TI-2025-24245 NSClient++ 0.5.2.35 Local Privilege Escalation via ExternalScripts and Web Interface CVSS 4.0HIGH 7.3
  • TI-2018-04702 Unquoted Windows search path vulnerability in NSClient++ before 0.4.1.73 allows… CVSS 3.0HIGH 7.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences