{"id":"CVE-2015-6016","aliases":["EUVD-2015-5959","GHSA-666f-pfx4-5gvf"],"status":"published","title":"ZyXEL P-660HW-T1 2 devices with ZyNOS firmware 3.40(AXH.0), PMG5318-B20A devices with firmware 1...","description":"ZyXEL P-660HW-T1 2 devices with ZyNOS firmware 3.40(AXH.0), PMG5318-B20A devices with firmware 1.00AANC0b5, and NBG-418N devices have a default password of 1234 for the admin account, which allows remote attackers to obtain administrative access via unspecified vectors.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.05731,"percentile":0.93097,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-255"],"published":"2015-12-31T02:00:00Z","modified":"2026-06-17T00:30:15Z","products":[{"vendor":"zyxel","product":"nbg-418n"},{"vendor":"zyxel","product":"pmg5318-b20a_firmware"},{"vendor":"zyxel","product":"zynos_firmware"}],"references":[{"url":"http://www.securitytracker.com/id/1034554","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.securitytracker.com/id/1034553","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.securitytracker.com/id/1034552","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://www.kb.cert.org/vuls/id/BLUU-9ZQU2R","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://www.kb.cert.org/vuls/id/870744","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-6016"},{"url":"https://github.com/advisories/GHSA-666f-pfx4-5gvf"}],"sources":{"cve":[{"id":"CVE-2015-6016","description":"ZyXEL P-660HW-T1 2 devices with ZyNOS firmware 3.40(AXH.0), PMG5318-B20A devices with firmware 1.00AANC0b5, and NBG-418N devices have a default password of 1234 for the admin account, which allows remote attackers to obtain administrative access via unspecified vectors.","status":"published","published":"2015-12-31T02:00:00Z","modified":"2024-08-06T07:06:35.028Z","updated_at":"2026-11-02T14:35:42.984856Z"}],"euvd":[{"id":"EUVD-2015-5959","description":"ZyXEL P-660HW-T1 2 devices with ZyNOS firmware 3.40(AXH.0), PMG5318-B20A devices with firmware 1.00AANC0b5, and NBG-418N devices have a default password of 1234 for the admin account, which allows remote attackers to obtain administrative access via unspecified vectors.","status":"published","published":"2015-12-31T02:00:00Z","modified":"2024-08-06T07:06:35Z","updated_at":"2026-11-03T02:21:57.614992Z"}],"ghsa":[{"id":"GHSA-666f-pfx4-5gvf","title":"ZyXEL P-660HW-T1 2 devices with ZyNOS firmware 3.40(AXH.0), PMG5318-B20A devices with firmware 1...","description":"ZyXEL P-660HW-T1 2 devices with ZyNOS firmware 3.40(AXH.0), PMG5318-B20A devices with firmware 1.00AANC0b5, and NBG-418N devices have a default password of 1234 for the admin account, which allows remote attackers to obtain administrative access via unspecified vectors.","status":"published","published":"2022-05-17T03:27:03Z","modified":"2023-01-27T05:07:31Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T14:43:08.293944Z"}],"nvd":[{"id":"CVE-2015-6016","description":"ZyXEL P-660HW-T1 2 devices with ZyNOS firmware 3.40(AXH.0), PMG5318-B20A devices with firmware 1.00AANC0b5, and NBG-418N devices have a default password of 1234 for the admin account, which allows remote attackers to obtain administrative access via unspecified vectors.","status":"published","published":"2015-12-31T05:59:14.833Z","modified":"2026-06-17T00:30:15.667Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-255"],"updated_at":"2026-11-02T14:03:15.746629Z"}]}}