DJI CrystalSky ZS600C USB-gadget backdoor allows root command execution

published 2026-10-23 17d ago modified 2026-10-28 12d ago also EUVD-2026-108980

cvss: 7.0; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits: 0; none known

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().

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 12d ago (2026-10-28)

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.0	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
CNA	4.0	7.0	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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:X/R:X/V:X/RE:X/U:X

Affected products

DJI CrystalSky ZS600C

Classification

Weakness

CWE-912 Hidden Functionality

References

cyber-defence-campus.github.io /projects/vulnerabilities/CVE-2026-114353
third-party-advisory

Sources

CVE List CVE-2026-114353
NVD CVE-2026-114353

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