{"id":"CVE-2013-20003","url":"https://www.cyber-defence.io/tools/cve/CVE-2013-20003","generatedAt":"2026-10-28T03:21:31.831Z","title":"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.","description":"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.","published":"2022-02-04T23:15:10.000Z","lastModified":"2026-06-16T23:52:33.000Z","status":"Modified","sourceIdentifier":"cret@cert.org","cvss":{"version":"3.1","score":8.3,"severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"},"cwe":["CWE-327","CWE-338"],"affected":["silabs/zgm130s037hgn firmware","silabs/zm5202 firmware","silabs/zm5101 firmware","silabs/zgm2305a27hgn firmware","silabs/zgm230sb27hgn firmware"],"epss":{"score":0.00572,"percentile":0.47051,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.57%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://orangecyberdefense.com/global/blog/sensepost/blackhat-conference-z-wave-security/","tags":["Third Party Advisory"],"source":"cret@cert.org"},{"url":"https://sensepost.com/cms/resources/conferences/2013/bh_zwave/Security%20Evaluation%20of%20Z-Wave_WP.pdf","tags":["Technical Description","Third Party Advisory"],"source":"cret@cert.org"},{"url":"https://www.pentestpartners.com/security-blog/z-shave-exploiting-z-wave-downgrade-attacks/","tags":["Exploit","Third Party Advisory"],"source":"cret@cert.org"},{"url":"https://orangecyberdefense.com/global/blog/sensepost/blackhat-conference-z-wave-security/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://sensepost.com/cms/resources/conferences/2013/bh_zwave/Security%20Evaluation%20of%20Z-Wave_WP.pdf","tags":["Technical Description","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.pentestpartners.com/security-blog/z-shave-exploiting-z-wave-downgrade-attacks/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2013-20003","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}