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z-wave

Z-Wave S0 network-key derivation flaw exploitation, S2 ECDH/DSK analysis, replay attacks against unauthenticated Z-Wave nodes, traffic capture with RTL-SDR, and active fuzzing/replay with EZ-Wave and Z-Force. Covers 868.42 MHz (EU) and 908.42 MHz (US) bands.

packages/decepticon/decepticon/skills/standard/iot/z-wave/SKILL.md

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Observed behavior
Network or broad shell
Last checked
Nov 2, 2026

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6,560
Repository last updated
Nov 7, 2026
License
Apache-2.0

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# Z-Wave S0/S2 Security Assessment

> Z-Wave is the dominant proprietary RF protocol for smart-home devices
> (locks, thermostats, sensors). Security class S0 (2009) has a fundamental
> key-exchange flaw: the network key is transmitted in cleartext during
> inclusion. S2 (2017) upgrades to ECDH but introduces a DSK (Device
> Specific Key) bootstrapping step that can be MITM'd if the controller
> UI does not enforce out-of-band DSK verification.

## Prerequisites

- **Hardware**:
  - RTL-SDR Blog v4 (passive capture, 24–1766 MHz) + GNU Radio.
  - HackRF One (TX/RX, active replay and injection, 1 MHz–6 GHz).