Is there a public exploit for CVE-2026-114549?

No public exploit for CVE-2026-114549 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-114549?

CVE-2026-114549 scores CVSS 9.8 (v3.0), rated critical.

What does CVE-2026-114549 affect?

CVE-2026-114549 affects NoMachine NoMachine.

9.8 Critical

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

CVE-2026-114549

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.

Assessment

CVSS: 9.8 (v3.0)
Severity: Critical
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 November 2026
Last updated: 3 November 2026
Affected: NoMachine · NoMachine
Assigner: zdi

CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

At the source

EUVD (ENISA)

References

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

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