ZDI-26-711: NoMachine Redis Improper Authentication Local Privilege Escalation Vulnerability
ZDI disclosed CVE-2026-92209, an improper authentication flaw in NoMachine's bundled Redis component allowing local privilege escalation (CVSS 7.8).
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CVE-2026-92209
Local privilege escalation via NoMachine Redis authentication
- CVSS 3.0
- 7.8 high
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
NoMachine uses insufficient entropy when generating credentials that control access to its Redis database. A local attacker who can already run low-privileged code can bypass that authentication, escalate privileges, and run arbitrary code as the service account. No user interaction is required. Affected and fixed versions have not been listed.
What to do: Apply NoMachine's update for CVE-2026-92209. No fixed version or workaround has been stated.
| Product | Affected |
|---|---|
| NoMachine | — |
Estimated exposure
No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
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.
- Weakness
- CWE-331
- Vector
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H