CVE-2026-92209
Received Received - Intake

Local Privilege Escalation in NoMachine via Redis Weak Authentication

Vulnerability report for CVE-2026-92209, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-21

Last updated on: 2026-10-23

Assigner: Zero Day Initiative

Description

NoMachine Redis Improper Authentication Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges 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 authentication mechanism controlling access to the Redis database. The issue results from using insufficient entropy in the generation of credentials. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the service account. Was ZDI-CAN-30984.

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Meta Information

Published
2026-10-21
Last Modified
2026-10-23
Generated
2026-11-10
AI Q&A
2026-10-22
EPSS Evaluated
2026-11-09
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
NoMachine NoMachine 9.7.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-331 The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

Attack-Flow Graph

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Executive Summary

CVE-2026-92209 is a local privilege escalation vulnerability in NoMachine software. It occurs due to insufficient entropy in credential generation for the Redis database authentication mechanism. Local attackers with low-privileged code execution can exploit this to escalate privileges and run arbitrary code as the service account.

Detection Guidance

To detect this vulnerability, check the installed version of NoMachine against the patched versions (v10.1.7, v9.9.6, v8.27.1). Use commands like 'nomachine -v' or check package managers (e.g., 'dpkg -l nomachine' for Debian-based systems). If the version is older, the system is likely vulnerable.

Impact Analysis

If you use NoMachine software with versions prior to v10.1.7, v9.9.6, or v8.27.1, an attacker with local access could gain higher privileges on your system. This could allow them to take control of your system or execute malicious code.

Mitigation Strategies

Immediately update NoMachine to a patched version (v10.1.7, v9.9.6, or v8.27.1). If updating is not possible, restrict local user access to prevent low-privileged code execution. Monitor for suspicious activity in Redis or NoMachine services.

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