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.
Fix
Public exploits 1
- do4choo/CVE-2026-92208_remote_mDNS_overflow PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Vendor advisories in the News 1
- ZDI-26-710: NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability Zero Day Initiative: published advisories · 2026-09-16
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 7
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-23 11:06
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-23 12:18
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-22 23:04
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 17:34
- StatusReceived → PublishedNVD modified 2026-10-21 17:16
- StatusPublished → ReceivedNVD modified 2026-10-21 18:17
- First seenCVSS 8.8 · nomachineNVD modified 2026-10-21 17:16
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.