CVE-2026-92209 NoMachine CVE debrief

Who should care

Defenders and administrators of systems using NoMachine Redis should assess exposure and prioritize mitigation, especially in environments where local privilege escalation could have significant impacts.

Why it matters

CVE-2026-92209 is a high-severity vulnerability in NoMachine Redis that allows local attackers to escalate privileges due to insufficient entropy in credential generation. Defenders should prioritize patching, restrict access, and monitor for suspicious activity to mitigate this vulnerability.

• Local privilege escalation can lead to unauthorized access and control of sensitive data and systems
• Successful exploitation can result in arbitrary code execution in the context of the service account
• Defenders must verify affected versions and ensure proper patching or mitigation to prevent exploitation
• Additional security measures, such as monitoring and restricting access to the Redis database, are necessary to minimize risk

Technical summary

The vulnerability exists within the authentication mechanism controlling access to the Redis database in NoMachine. It results from using insufficient entropy in the generation of credentials, allowing local attackers to escalate privileges. The vulnerability impacts systems using NoMachine Redis, particularly in environments where local privilege escalation could have significant impacts. Defenders should assess exposure and prioritize mitigation. The issue arises from insufficient entropy in credential generation. To exploit this, an attacker must first execute low-privileged code on the target system. This vulnerability allows local attackers to escalate privileges and execute arbitrary code in the context

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability, especially in systems where local privilege escalation is a concern.

Recommended defensive actions

• Patch or update NoMachine to the latest version
• Restrict access to the Redis database
• Monitor for suspicious activity
• Implement additional security measures to prevent local privilege escalation
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the vulnerability. However, additional information from the vendor and other sources may be necessary for a comprehensive understanding. The CVE record was published on 2026-10-21T17:16:13.249Z and has not been modified since then. The source item details are also provided. There are no additional details available from other sources at this time. The information provided is limited, and defenders should verify affected versions and ensure proper patching or mitigation to prevent. This

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.