TI-2026-15017 Aliases CVE-2026-18264 GHSA-wx22-7c2v-g5hw

OS command injection in NoMachine

MEDIUM 44CWE-78Published 2026-08-20 · Updated 2026-08-26

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.02269 83rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
NoMachine	NoMachine	9.7.3	—	No fix listed	CNA

NoMachine VendorNoMachine Affected 9.7.3 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:nomachine:nomachine::::::::	—	—	NoMachine

cpe:2.3:a:nomachine:nomachine:*:*:*:*:*:*:*:* Versions — — ·NoMachine

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-18264
2026-10-03 Alias added: GHSA-wx22-7c2v-g5hw

References

Advisory 1

vendor-provided URL

Other 1

ZDI-26-483

TI-2023-20294 An arbitrary file overwrite vulnerability in NoMachine Free Edition and Enterprise Client… CVSS 3.1CRITICAL 9.1
TI-2026-84863 Heap overflow in NoMachine web service allows remote code execution CVSS 3.0CRITICAL 9.8
TI-2018-00619 Improper input validation in NoMachine App for Android CVSS 3.0CRITICAL 9.8
TI-2017-09455 An unspecified server utility in NoMachine before 5.3.10 on Mac OS X and Linux allows… CVSS 3.0HIGH 8.8
TI-2026-78898 Heap overflow in NoMachine mDNS parsing enables remote code execution CVSS 3.0HIGH 8.8
TI-2018-12800 NoMachine before 5.3.27 and 6.x before 6.3.6 allows attackers to gain privileges via a… CVSS 3.0HIGH 7.8

See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences