Z-Wave devices from Sierra Designs (circa 2013) and Silicon Labs (using S0 security) may use a known, shared network key of all zeros, allowing an attacker within radio range to spoof Z-Wave traffic.

References

• https://nvd.nist.gov/vuln/detail/CVE-2013-20003
• https://orangecyberdefense.com/global/blog/sensepost/blackhat-conference-z-wave-security/
• https://sensepost.com/cms/resources/conferences/2013/bh_zwave/Security%20Evaluation%20of%20Z-Wave_WP.pdf
• https://www.pentestpartners.com/security-blog/z-shave-exploiting-z-wave-downgrade-attacks/