CVE-2013-20003

CVE-2013-20003 describes a critical vulnerability in Z-Wave devices from Sierra Designs and Silicon Labs (specifically those using S0 security), where a shared, all-zero network key can be exploited. An attacker within radio range can leverage this weakness to spoof Z-Wave traffic, leading to high impacts on confidentiality, integrity, and availability. With a CVSS score of 8.3 (HIGH), this vulnerability is remotely exploitable with high attack complexity, but does not require user interaction. While there is no evidence of active exploitation, nor publicly available exploit code in Metasploit or ExploitDB, the vulnerability has received minimal community discussion or media coverage.