---
cve: "CVE-2026-92208"
severity: "HIGH"
cvss: 8.8
epss: "0.6%"
vendor: "NoMachine"
kev: false
exploited: false
published: "2026-10-21 18:17:31"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-26T09:57:36+01:00"
---

# CVE-2026-92208

> 8.8 HIGH

## Beschreibung

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.

## CNA-Record (Kanon, cvelistV5)

- CNA: **zdi**
- State: PUBLISHED
- Stand: 2026-10-23 11:06:23
- CNA-CVSS: **8.8** (`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Benachbart | warn |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Schwachstellen-Klasse

- **CWE-122** — Heap-based Buffer Overflow
  A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

## Angriffsmuster (CAPEC)

- [CAPEC-92 — Forced Integer Overflow](https://capec.mitre.org/data/definitions/92.html) _(Severity: High)_

## BSI-Hinweise (deutsch)

- [NoMachine: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-3414) — _BSI-Einstufung: hoch_
  Ein Angreifer kann mehrere Schwachstellen in NoMachine ausnutzen, um beliebigen Programmcode auszuführen, einen Denial of Service zu verursachen, Sicherheitsmaßnahmen zu umgehen oder seine Privilegien zu erweitern.

## Referenzen

- <https://www.zerodayinitiative.com/advisories/ZDI-26-710/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-92208/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_