What is CVE-2026-18264?

CVE-2026-18264 is a high-severity vulnerability in Nomachine, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-08-20.

How severe is CVE-2026-18264?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Nomachine

CVE-2026-18264

NoMachine getstat Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of NoMachine. Authentication is required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 4000 by default. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account. . Was ZDI-CAN-30634.

Vulnerability class: Command Injection (OS Command Injection)

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Nomachine — versions 9.7.3

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

zdi-disclosures@trendmicro.com (x_research-advisory)
zdi-disclosures@trendmicro.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-18264?: CVE-2026-18264 is a high-severity vulnerability in Nomachine, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-08-20.
How severe is CVE-2026-18264?: High severity. CVSS v3 base score is 8.8 out of 10.