TI-2026-04408 Aliases CVE-2026-5053 GHSA-75gg-gxqp-fq44

NoMachine External Control of File Path Arbitrary File Deletion Vulnerability

LOW 30CWE-73Published 2026-04-11 · Updated 2026-04-13

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA.

Summary

NoMachine External Control of File Path Arbitrary File Deletion Vulnerability. This vulnerability allows local attackers to delete arbitrary files on affected installations of NoMachine. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of environment variables. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to delete files in the context of root. Was ZDI-CAN-28644.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0015 4th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
NoMachine	NoMachine	9.3.7	—	No fix listed	CNA

NoMachine VendorNoMachine Affected 9.3.7 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nomachine:nomachine::::::::	before 9.4.14	Vulnerable	NoMachine

cpe:2.3:a:nomachine:nomachine:*:*:*:*:*:*:*:* Versions before 9.4.14 Vulnerable ·NoMachine

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-5053
2026-10-03 Alias added: GHSA-75gg-gxqp-fq44

References

Advisory 1

ZDI-26-247

TI-2023-20294 An arbitrary file overwrite vulnerability in NoMachine Free Edition and Enterprise Client… CVSS 3.1CRITICAL 9.1
TI-2018-00619 Improper input validation in NoMachine App for Android CVSS 3.0CRITICAL 9.8
TI-2017-09455 An unspecified server utility in NoMachine before 5.3.10 on Mac OS X and Linux allows… CVSS 3.0HIGH 8.8
TI-2018-12800 NoMachine before 5.3.27 and 6.x before 6.3.6 allows attackers to gain privileges via a… CVSS 3.0HIGH 7.8
TI-2018-05073 An uninitialised stack variable in the nxfuse component that is part of the Open Source… CVSS 3.0HIGH 7.8
TI-2025-07885 Uncontrolled search path in NoMachine CVSS 3.0HIGH 7.8

See all 13 →

Sources

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