{"id":"CVE-2021-35035","aliases":["EUVD-2021-21682","GHSA-778x-386c-73gw"],"status":"published","title":"A cleartext storage of sensitive information vulnerability in the Zyxel NBG6604 firmware could...","description":"A cleartext storage of sensitive information vulnerability in the Zyxel NBG6604 firmware could allow a remote, authenticated attacker to obtain sensitive information from the configuration file.","severity":{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00668,"percentile":0.52372,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-312"],"published":"2021-12-29T12:45:38Z","modified":"2026-06-17T03:57:01Z","products":[{"vendor":"zyxel","product":"nbg6604 series firmware"},{"vendor":"zyxel","product":"nbg6604_firmware"}],"references":[{"url":"https://www.zyxel.com/support/Zyxel_security_advisory_for_sensitive_information_vulnerabilities_of_NBG6604_home_router.shtml","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35035"},{"url":"https://github.com/advisories/GHSA-778x-386c-73gw"}],"sources":{"cve":[{"id":"CVE-2021-35035","description":"A cleartext storage of sensitive information vulnerability in the Zyxel NBG6604 firmware could allow a remote, authenticated attacker to obtain sensitive information from the configuration file.","status":"published","published":"2021-12-29T12:45:38Z","modified":"2024-08-04T00:33:49.91Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-312"],"updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-21682","description":"A cleartext storage of sensitive information vulnerability in the Zyxel NBG6604 firmware could allow a remote, authenticated attacker to obtain sensitive information from the configuration file.","status":"published","published":"2021-12-29T12:45:38Z","modified":"2024-08-04T00:33:49Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:24:30.986651Z"}],"ghsa":[{"id":"GHSA-778x-386c-73gw","title":"A cleartext storage of sensitive information vulnerability in the Zyxel NBG6604 firmware could...","description":"A cleartext storage of sensitive information vulnerability in the Zyxel NBG6604 firmware could allow a remote, authenticated attacker to obtain sensitive information from the configuration file.","status":"published","published":"2021-12-30T00:00:23Z","modified":"2023-02-03T05:03:53Z","cwes":["CWE-312"],"updated_at":"2026-11-02T14:53:26.852274Z"}],"nvd":[{"id":"CVE-2021-35035","description":"A cleartext storage of sensitive information vulnerability in the Zyxel NBG6604 firmware could allow a remote, authenticated attacker to obtain sensitive information from the configuration file.","status":"published","published":"2021-12-29T13:15:07.893Z","modified":"2026-06-17T03:57:01.163Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-312"],"updated_at":"2026-11-02T14:07:02.977492Z"}]}}