CRITICAL 9.8 NVD

CVE-2026-114549

NoMachine nxwebrunner Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on af

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.

References

https://www.zerodayinitiative.com/advisories/ZDI-26-786/

Published: 2026-11-04 · Source: NVD · Feed updated: 2026-11-04

This critical severity vulnerability with a CVSS score of 9.8 was published on 2026-11-04 via NVD.

Risk Timeline

CVE Disclosed2026-11-04 · -1 days ago

Remediation Resources

Analysis & PoC

www.zerodayinitiative.com/advisories/ZDI-26-786/

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