CVE-2026-53694

HIGH

Potential local privileges escalation through argument injection in the nxchmod.sh script

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-53694. PoCs published by do4choo.

AI-analyzed exploit summary This repository contains a functional Python-based exploit for CVE-2026-53694, a local privilege escalation vulnerability in NoMachine for Linux. The exploit leverages argument injection in the `nxchmod.sh` script to manipulate file permissions and overwrite `/etc/passwd`, allowing an attacker to escalate privileges to root.

Description

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability in Nomachine allows Argument Injection.This issue affects Nomachine: before 9.5.7, before 8.23.2.

Exploits (1)

github WORKING POC
by do4choo · pythonpoc
https://github.com/do4choo/CVE-2026-53694-NoMachine-LPE

This repository contains a functional Python-based exploit for CVE-2026-53694, a local privilege escalation vulnerability in NoMachine for Linux. The exploit leverages argument injection in the `nxchmod.sh` script to manipulate file permissions and overwrite `/etc/passwd`, allowing an attacker to escalate privileges to root.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: NoMachine for Linux
No auth needed
Prerequisites: Wayland session with Xwayland active · Graphical session (desktop or login screen)
mistral-large-3 · analyzed Jul 01, 2026 Full analysis →

References (2)

Core 2
Core References
Release Notes release-notes
https://kb.nomachine.com/SU05X00274
Release Notes release-notes
https://kb.nomachine.com/SU05X00275

Scores

CVSS v4 7.3
EPSS 0.0013
EPSS Percentile 3.3%
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-88
Status published
Products (4)
NoMachine/NoMachine < 8.23.2
NoMachine/NoMachine < 9.5.7
NoMachine/NoMachine 7.0.0 - 8.23.2
NoMachine/NoMachine 7.0.0 - 9.5.7
Published Jun 10, 2026
Tracked Since Jun 10, 2026