{"cve":"CVE-2019-12583","nvd":{"published":"2019-06-27T14:15:10.393","modified":"2026-06-17T02:14:54.653","status":"Modified","description":"Missing Access Control in the \"Free Time\" component of several Zyxel UAG, USG, and ZyWall devices allows a remote attacker to generate guest accounts by directly accessing the account generator. This can lead to unauthorised network access or Denial of Service.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","score":9.1},"cwes":["CWE-425"],"references":["https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss/","https://www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml","https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss/","https://www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml"],"products":["zyxel:uag2100_firmware","zyxel:uag4100_firmware","zyxel:uag5100_firmware","zyxel:usg1100_firmware","zyxel:usg110_firmware","zyxel:usg1900_firmware","zyxel:usg210_firmware","zyxel:usg2200-vpn_firmware","zyxel:usg310_firmware","zyxel:zywall_1100_firmware","zyxel:zywall_110_firmware","zyxel:zywall_310_firmware","zyxel:zywall_vpn100_firmware","zyxel:zywall_vpn300_firmware"],"source":"nvd","synced_at":"2026-10-19T20:57:00.690689396+00:00"},"epss":{"cve":"CVE-2019-12583","score":0.43926,"percentile":0.9875,"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."]}