# CVE-2026-92208: NoMachine mDNS heap-based buffer overflow remote code execution

Source: https://junglewise.ai/threats/cve-2026-92208-nomachine-mdns-heap-based-buffer-overflow-remote-code-execution  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2026-92208 · Severity: high · CVSS 8.8 · Published 2026-10-21

NoMachine is remote desktop and application access software used to connect to computers over networks. A heap buffer overflow in its mDNS (multicast DNS) parser allows attackers on the local network to execute arbitrary code without authentication, potentially gaining full control of the affected system.

Technologies: [Nomachine](https://junglewise.ai/threats/technologies/nomachine). Vendors: [Nomachine](https://junglewise.ai/threats/vendors/nomachine).

## Quick answers

**Is CVE-2026-92208 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-92208 being exploited in the wild.

**How severe is CVE-2026-92208?** High severity, with a CVSS score of 8.8, published 21 October 2026.

**Which products and versions are affected?** Nomachine before 10.1.7, 9.9.6, and 8.27.1.

**Is there a fix for CVE-2026-92208?** Yes: fixed in NoMachine v10.1.7, v9.9.6, v8.27.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-92208 attacked?** It is attacked from the adjacent network, in a hosted service.

**Am I affected by CVE-2026-92208?** Check whether you run Nomachine at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in NoMachine v10.1.7, v9.9.6, v8.27.1

## Technical details

The vulnerability exists in the parsing of mDNS resource records where insufficient validation of user-supplied data length results in a heap-based buffer overflow. Attackers on the network-adjacent segment can trigger this by sending specially crafted mDNS packets; no authentication or user interaction is required. Successful exploitation grants arbitrary code execution in the context of the service account.

## Affected products

- NoMachine NoMachine before 10.1.7, 9.9.6, and 8.27.1

## Timeline

- 2026-08-07: disclosed: Vulnerability reported to vendor
- 2026-09-16: advisory: Coordinated public release of advisory

## References

- [https://www.zerodayinitiative.com/advisories/ZDI-26-710/](https://www.zerodayinitiative.com/advisories/ZDI-26-710/)

## Related threats

- [NoMachine nxhtd server-side request forgery information disclosure](https://junglewise.ai/threats/cve-2026-92210-nomachine-nxhtd-server-side-request-forgery-information)
- [NoMachine Redis improper authentication privilege escalation](https://junglewise.ai/threats/cve-2026-92209-nomachine-redis-improper-authentication-local-privilege)
- [NoMachine Device Service named pipe privilege escalation](https://junglewise.ai/threats/cve-2026-111184-nomachine-named-pipe-incorrect-permission-assignment-local)
- [NoMachine privilege escalation via argument injection in nxchmod.sh](https://junglewise.ai/threats/cve-2026-53694-nomachine-privilege-escalation-via-argument-injection-in-nxchmod)
- [NoMachine privilege escalation in Device Server](https://junglewise.ai/threats/cve-2026-5055-nomachine-privilege-escalation-in-device-server)