ZDI-26-712: NoMachine nxhtd Server-Side Request Forgery Information Disclosure Vulnerability
ZDI disclosed CVE-2026-92210, an unauthenticated server-side request forgery in NoMachine's nxhtd server leading to information disclosure (CVSS 7.2).
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CVE-2026-92210
Unauthenticated SSRF in NoMachine nxhtd on UDP 4443
- CVSS 3.0
- 7.2 high
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
NoMachine’s nxhtd web service fails to validate a URI before fetching it, so a remote attacker can trigger server-side requests. No login or user interaction is required; the service listens on UDP port 4443 by default. Requests run as the service account and can disclose information. Installations of NoMachine nxhtd with that service reachable are affected; affected builds are not listed.
What to do: Apply NoMachine’s update for CVE-2026-92210. No workaround is stated.
| Product | Affected |
|---|---|
| NoMachine nxhtd | — |
Estimated exposure
No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
NoMachine nxhtd Server-Side Request Forgery Information Disclosure Vulnerability. This vulnerability allows remote attackers to initiate arbitrary server-side requests on affected installations of NoMachine. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on UDP port 4443 by default. The issue results from the lack of proper validation of a URI prior to accessing resources. An attacker can leverage this vulnerability to initiate requests in the context of the service account. Was ZDI-CAN-31619.
- Weakness
- CWE-918
- Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N