{"id":"CVE-2021-4030","aliases":["EUVD-2021-33931","GHSA-f5hq-fhh6-8vh6"],"status":"published","title":"A cross-site request forgery vulnerability in the HTTP daemon of the Zyxel ARMOR Z1/Z2 firmware...","description":"A cross-site request forgery vulnerability in the HTTP daemon of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary commands if they coerce or trick a local user to visit a compromised website with malicious scripts.","severity":{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00439,"percentile":0.38471,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-352"],"published":"2022-02-22T14:25:10Z","modified":"2026-06-17T04:18:55Z","products":[{"vendor":"zyxel","product":"armor z1 (nbg6816) firmware"},{"vendor":"zyxel","product":"armor z2 (nbg6817) firmware"},{"vendor":"zyxel","product":"nbg6816_firmware"},{"vendor":"zyxel","product":"nbg6817_firmware"}],"references":[{"url":"https://www.zyxel.com/support/forgery-vulnerabilities-of-select-Armor-home-routers.shtml","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4030"},{"url":"https://github.com/advisories/GHSA-f5hq-fhh6-8vh6"}],"sources":{"cve":[{"id":"CVE-2021-4030","description":"A cross-site request forgery vulnerability in the HTTP daemon of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary commands if they coerce or trick a local user to visit a compromised website with malicious scripts.","status":"published","published":"2022-02-22T14:25:10Z","modified":"2024-08-03T17:16:03.558Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:33:07.697752Z"}],"euvd":[{"id":"EUVD-2021-33931","description":"A cross-site request forgery vulnerability in the HTTP daemon of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary commands if they coerce or trick a local user to visit a compromised website with malicious scripts.","status":"published","published":"2022-02-22T14:25:10Z","modified":"2024-08-03T17:16:03Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:25:10.888157Z"}],"ghsa":[{"id":"GHSA-f5hq-fhh6-8vh6","title":"A cross-site request forgery vulnerability in the HTTP daemon of the Zyxel ARMOR Z1/Z2 firmware...","description":"A cross-site request forgery vulnerability in the HTTP daemon of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary commands if they coerce or trick a local user to visit a compromised website with malicious scripts.","status":"published","published":"2022-02-25T00:01:06Z","modified":"2023-02-03T05:06:08Z","cwes":["CWE-352"],"updated_at":"2026-11-02T14:53:51.237254Z"}],"nvd":[{"id":"CVE-2021-4030","description":"A cross-site request forgery vulnerability in the HTTP daemon of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary commands if they coerce or trick a local user to visit a compromised website with malicious scripts.","status":"published","published":"2022-02-24T15:15:25.207Z","modified":"2026-06-17T04:18:55.287Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:07:04.6896Z"}]}}