CVE-2026-114353
DJI CrystalSky ZS600C USB-gadget backdoor allows root command execution
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CVSS v3.1 (listed by NVD)
—
Not scored
CVSS v4.0 (listed by NVD)
7.0
HIGH
Scored by ncsc.ch (not yet scored by NVD)
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
CVSS (listed by CVE.org)
7.0
HIGH
Scored by CNA (NCSC.ch) · v4.0
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
EPSS exploit probability
0.2%
Percentile 10.1%
as of 2026-10-24
CISA KEV
—
Not listed
Attack conditions and impact
Derived from the CNA (via NVD) CVSS 4.0 vector
PhysicalNo authNo interaction
Confidentiality HIntegrity HAvailability H
| Metric | Value | Meaning |
|---|---|---|
| Attack vector AV | P | Physical access |
| Attack complexity AC | L | Low (easy) |
| Attack requirements AT | N | None |
| Privileges required PR | N | None |
| User interaction UI | N | None |
| Confidentiality (vulnerable system) VC | H | High |
| Integrity (vulnerable system) VI | H | High |
| Availability (vulnerable system) VA | H | High |
| Confidentiality (subsequent systems) SC | N | None |
| Integrity (subsequent systems) SI | N | None |
| Availability (subsequent systems) SA | N | None |
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
Description
NVD
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().
CVSS assessments
| Provider | Version | Score | Vector |
|---|---|---|---|
| NVD / [email protected] (Secondary) | 4.0 | 7.0 HIGH | 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 |
| CNA / NCSC.ch | 4.0 | 7.0 HIGH | 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 |
Affected products and packages
CNA (CVE.org)
| Vendor | Product | Versions |
|---|---|---|
| DJI | CrystalSky ZS600C | affected: 0.3.9.7 … <= 0.6.6.9 default: unaffected |
Linux distribution status
References (1)
- https://cyber-defence-campus.github.io/projects/vulnerabilities/CVE-2026-114353 NVD, CNA third-party-advisory