Is CVE-2026-5053 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-5053 being exploited in the wild.

How severe is CVE-2026-5053?

High severity, with a CVSS score of 7.1, published 11 April 2026.

Which products and versions are affected?

NoMachine NoMachine versions prior to 9.4.14.

Is there a fix for CVE-2026-5053?

A patch was published on 2026-03-30: Fixed in NoMachine version 9.4.14 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-5053 attacked?

It is attacked with local access, in a network appliance.

Am I affected by CVE-2026-5053?

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.

CVE-2026-5053: NoMachine arbitrary file deletion via environment variables

CVE-2026-5053 · Severity: high · CVSS 7.1 · Published 2026-04-11

A vulnerability in NoMachine, a remote desktop and access software, allows a local user with limited permissions to delete any file on the system. By manipulating specific settings, an attacker can force the application to delete critical system files or application data that would normally be protected. This could lead to a total system failure, loss of important data, or the disruption of business operations.

Technologies: Nomachine. Vendors: Nomachine.

Quick answers

Is CVE-2026-5053 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-5053 being exploited in the wild.
How severe is CVE-2026-5053?: High severity, with a CVSS score of 7.1, published 11 April 2026.
Which products and versions are affected?: NoMachine NoMachine versions prior to 9.4.14.
Is there a fix for CVE-2026-5053?: A patch was published on 2026-03-30: Fixed in NoMachine version 9.4.14 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-5053 attacked?: It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-5053?: 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

An arbitrary file deletion vulnerability exists in NoMachine due to the external control of file paths (CWE-73). The flaw is located in the handling of environment variables, where the application fails to properly validate user-supplied paths before using them in file operations. A local attacker with low-privileged access can manipulate these environment variables to trigger file deletions with root-level privileges. This can be used to delete critical system files or configuration data. The issue is resolved in NoMachine version 9.4.14.

Affected products

NoMachine NoMachine versions prior to 9.4.14

Timeline

2026-02-06: disclosed: Vulnerability reported to vendor
2026-03-30: patched: Fixed in NoMachine version 9.4.14
2026-03-30: advisory: Coordinated public release of advisory by ZDI
2026-04-11: advisory: NVD publication date

References

https://www.zerodayinitiative.com/advisories/ZDI-26-247/

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