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High · 8.8 Public exploit CVE-2026-92208 EUVD-2026-107397GHSA-64r7-8gpp-2vpj

NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability

Published Oct 21, 2026 · Updated Oct 23, 2026 · Assigned by zdi

Vendor: NoMachine Product: NoMachine

Description

NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NoMachine. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the parsing of mDNS resource records. 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-30982.

Affected products

VendorProductAffectedFixed
NoMachine NoMachine 9.8.2_1 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 1

References