ZDI-26-483: 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 ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-18264.
AI Analysis
Technical Summary
CVE-2026-18264 is a command injection vulnerability in the NoMachine web service component that listens on TCP port 4000. The vulnerability arises from insufficient validation of a user-supplied string before it is used in a system call, enabling authenticated remote attackers to execute arbitrary code with the privileges of the service account. The Zero Day Initiative assigned a CVSS score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reflecting high impact on confidentiality, integrity, and availability. NoMachine has issued a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows authenticated remote attackers to execute arbitrary code on the affected system with the privileges of the NoMachine service account. This can lead to full compromise of the affected host, including complete control over confidentiality, integrity, and availability of the system.
Mitigation Recommendations
NoMachine has released an official update that addresses this vulnerability. Users should apply the update promptly to remediate the issue. Since authentication is required for exploitation, ensuring strong authentication controls may reduce risk but does not replace patching. Patch status is confirmed by the vendor advisory at https://kb.nomachine.com/TR06X11869.
ZDI-26-483: NoMachine getstat Command Injection Remote Code Execution Vulnerability
Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of NoMachine. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-18264.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18264 is a command injection vulnerability in the NoMachine web service component that listens on TCP port 4000. The vulnerability arises from insufficient validation of a user-supplied string before it is used in a system call, enabling authenticated remote attackers to execute arbitrary code with the privileges of the service account. The Zero Day Initiative assigned a CVSS score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reflecting high impact on confidentiality, integrity, and availability. NoMachine has issued a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows authenticated remote attackers to execute arbitrary code on the affected system with the privileges of the NoMachine service account. This can lead to full compromise of the affected host, including complete control over confidentiality, integrity, and availability of the system.
Mitigation Recommendations
NoMachine has released an official update that addresses this vulnerability. Users should apply the update promptly to remediate the issue. Since authentication is required for exploitation, ensuring strong authentication controls may reduce risk but does not replace patching. Patch status is confirmed by the vendor advisory at https://kb.nomachine.com/TR06X11869.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-483/","fetched":true,"fetchedAt":"2026-07-30T15:56:00.212Z","wordCount":194}
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
Threat ID: 6a6b74c49c2644c7f84cc1ec
Added to database: 07/30/2026, 15:59:00 UTC
Last enriched: 08/15/2026, 05:15:59 UTC
Last updated: 09/11/2026, 07:31:52 UTC
Views: 48
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