---
id: CVE-2026-114353
title: DJI CrystalSky ZS600C USB-gadget backdoor allows root command execution
summary: >-
  Hidden functionality (undocumented backdoor) in the root-privileged
  'assistant' daemon in DJI CrystalSky ZS600C firmware v0.3.9.7 through v0.6.6.9
  on Android allows a physically-present attacker with USB access to execute
  arbitrary OS co…
severity: high
cvss: 7
cvssVector: 'CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/S:P'
cvssSource: cna
cwe:
  - CWE-912
vendor: DJI
product: CrystalSky ZS600C
affected:
  - crystalsky_zs600c >= 0.3.9.7 <= 0.6.6.9
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T13:31:05.598Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114353'
references:
  - url: >-
      https://cyber-defence-campus.github.io/projects/vulnerabilities/CVE-2026-114353
    label: CVE-2026-114353
tags:
  - cve.org
ingestedAt: '2026-10-23T14:28:08.706Z'
---

## Overview

Hidden functionality (undocumented backdoor) in the root-privileged 'assistant' daemon in DJI CrystalSky ZS600C firmware v0.3.9.7 through v0.6.6.9 on Android allows a physically-present attacker with USB access to execute arbitrary OS commands as root by sending the hard-coded magic string 'dji26656677' to the USB-gadget serial interface (/dev/ttyGS0), after which each subsequent line is passed to system().

## Affected

- `crystalsky_zs600c >= 0.3.9.7 <= 0.6.6.9`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.