Improper Authentication in NoMachine Redis Leads to Local Privilege Escalation (CVE‑2026‑92209)
What It Is — A local privilege‑escalation flaw in NoMachine’s Redis authentication mechanism, caused by insufficient entropy when generating service‑account credentials. An attacker who can run low‑privileged code on the host can leverage the flaw to obtain the service account’s privileges and execute arbitrary code.
Exploitability — CVSS 7.8 (High). The vulnerability is locally exploitable; no public exploit code is circulating, but the attack chain is simple once low‑privileged access is present.
Affected Products — NoMachine remote‑desktop client/server versions prior to v10.1.7, v9.9.6, and v8.27.1.
Why It Matters for Trust & Control Assurance
- Underscores the importance of continuous verification of authentication and least‑privilege controls for internal services.
- Weak internal access controls erode the audit trail, making it harder to provide defensible evidence of compliance with frameworks such as NIST CSF 2.0.
- Enterprises are increasingly required to demonstrate real‑time control monitoring and evidence of remediation to satisfy audit and procurement requirements.
Recommended Actions
- Deploy the vendor‑provided patches (v10.1.7, v9.9.6, v8.27.1) without delay.
- Conduct a credential‑entropy review for all service‑account secrets; replace low‑entropy values with cryptographically strong secrets and enforce regular rotation.
- Record remediation steps in your continuous control‑monitoring platform to create audit‑ready evidence.