{"cve":"CVE-2023-33778","nvd":{"published":"2023-06-01T04:15:10.313","modified":"2026-06-17T06:02:16.407","status":"Modified","description":"Draytek Vigor Routers firmware versions below 3.9.6/4.2.4, Access Points firmware versions below v1.4.0, Switches firmware versions below 2.6.7, and Myvigor firmware versions below 2.3.2 were discovered to use hardcoded encryption keys which allows attackers to bind any affected device to their own account. Attackers are then able to create WCF and DrayDDNS licenses and synchronize them from the website.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-798"],"references":["https://gist.github.com/Ji4n1ng/6d028709d39458f5ab95b3ea211225ef","https://gist.github.com/Ji4n1ng/6d028709d39458f5ab95b3ea211225ef"],"products":["draytek:myvigor","draytek:vigor1000b_firmware","draytek:vigor130_firmware","draytek:vigor165_firmware","draytek:vigor166_firmware","draytek:vigor167_firmware","draytek:vigor2135ac_firmware","draytek:vigor2135ax_firmware","draytek:vigor2135fvac_firmware","draytek:vigor2135vac_firmware","draytek:vigor2620l_firmware","draytek:vigor2620ln_firmware","draytek:vigor2763ac_firmware","draytek:vigor2765ac_firmware","draytek:vigor2765ax_firmware","draytek:vigor2765vac_firmware","draytek:vigor2766ac_firmware","draytek:vigor2766ax_firmware","draytek:vigor2766vac_firmware","draytek:vigor2832n_firmware","draytek:vigor2862ac_firmware","draytek:vigor2862b_firmware","draytek:vigor2862bn_firmware","draytek:vigor2862l_firmware","draytek:vigor2862lac_firmware","draytek:vigor2862ln_firmware","draytek:vigor2862n_firmware","draytek:vigor2862vac_firmware","draytek:vigor2865ac_firmware","draytek:vigor2865ax_firmware","draytek:vigor2865l_firmware","draytek:vigor2865lac_firmware","draytek:vigor2865vac_firmware","draytek:vigor2866ac_firmware","draytek:vigor2866ax_firmware","draytek:vigor2866l_firmware","draytek:vigor2866lac_firmware","draytek:vigor2866vac_firmware","draytek:vigor2915ac_firmware","draytek:vigor2926_plus_firmware","draytek:vigor2927ac_firmware","draytek:vigor2927ax_firmware","draytek:vigor2927f_firmware","draytek:vigor2927l_firmware","draytek:vigor2927lac_firmware","draytek:vigor2927vac_firmware","draytek:vigor2962_firmware","draytek:vigor3910_firmware","draytek:vigorap_1000c_firmware","draytek:vigorap_1060c_firmware"],"source":"nvd","synced_at":"2026-10-19T21:38:24.161619714+00:00"},"epss":{"cve":"CVE-2023-33778","score":0.00594,"percentile":0.48401,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}