Vulnerabilities

NoMachine nxwebrunner Heap-based Buffer Overflow Remote Code Execution Vulnerability.

NoMachine nxwebrunner Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of NoMachine. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 4443 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-30685.

Read at NIST National Vulnerability Database (CVE API 2.0)

Vendor

NoMachine

Product

NoMachine

CVSS v3.0

9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness

CWE-122

NVD status

Received

• NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
• CVE-2026-114549 on this site · NVD · CVE.org · Vulnpedia

Other items that share a CVE or were clustered with this one.

1. 24
   ZDI advisory ZDI 12d ago

   NoMachine nxwebrunner Heap-based Buffer Overflow Remote Code Execution Vulnerability

   CVSS 9.8 CVE-2026-114549