CVE-2026-5054: NoMachine local privilege escalation via improper path validation

CVE-2026-5054 · Severity: high · CVSS 7.8 · Published 2026-04-11

NoMachine is a remote desktop tool used to access computers and manage servers remotely. A security flaw in how the software handles file paths allows a user who already has limited access to the computer to gain full administrative (root) control. This could allow an unauthorized person to take complete control of the system, access sensitive data, or disrupt operations.

Technologies: Nomachine. Vendors: Nomachine.

Quick answers

Is CVE-2026-5054 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-5054 being exploited in the wild.
How severe is CVE-2026-5054?
High severity, with a CVSS score of 7.8, published 11 April 2026.
Which products and versions are affected?
NoMachine NoMachine versions prior to 9.4.14.
Is there a fix for CVE-2026-5054?
A patch was published on 2026-03-30: Coordinated public release of advisory and fix in version 9.4.14 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-5054 attacked?
It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-5054?
Check whether you run Nomachine. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A local privilege escalation vulnerability exists in NoMachine due to improper validation of user-supplied file paths in command line parameters (CWE-73). The flaw occurs when the application performs file operations using these unvalidated paths, allowing an attacker with low-privileged access to manipulate the execution flow. By exploiting this lack of path validation, an attacker can execute arbitrary code with root-level privileges. The vulnerability is addressed in NoMachine version 9.4.14. Exploitation requires the attacker to have existing local access to execute code on the target system.

Affected products

  • NoMachine NoMachine versions prior to 9.4.14

Timeline

  • 2026-02-06: other: Vulnerability reported to vendor
  • 2026-03-30: patched: Coordinated public release of advisory and fix in version 9.4.14
  • 2026-04-11: disclosed: NVD publication date

References

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