---
cve: "CVE-2020-10071"
severity: "CRITICAL"
cvss: 9.0
epss: "3.4%"
vendor: "zephyrproject-rtos"
kev: false
exploited: false
published: "2020-06-05 18:15:13"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T03:39:38+02:00"
---

# CVE-2020-10071

> 9.0 CRITICAL · 🧪 PoC

## Beschreibung

The Zephyr MQTT parsing code performs insufficient checking of the length field on publish messages, allowing a buffer overflow and potentially remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
```

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

## Referenzen

- <https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessment>
- <https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-86>
- <https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10071>
- <https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/989c4713ba429aa5105fe476b4d629718f3e6082>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-10071) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_