{"id":"CVE-2023-4397","aliases":["EUVD-2023-54260","GHSA-rx6q-hj2g-x8wp"],"status":"published","title":"A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series...","description":"A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series firmware version 5.37, USG FLEX 50(W) series firmware version 5.37, and USG20(W)-VPN series firmware version 5.37, could allow an authenticated local attacker with administrator privileges to cause denial-of-service (DoS) conditions by executing the CLI command with crafted strings on an affected device.","severity":{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00233,"percentile":0.14257,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2023-11-28T01:42:00Z","modified":"2026-06-17T06:37:44Z","products":[{"vendor":"zyxel","product":"atp series firmware"},{"vendor":"zyxel","product":"usg flex 50(w) series firmware"},{"vendor":"zyxel","product":"usg flex series firmware"},{"vendor":"zyxel","product":"usg20(w)-vpn series firmware"},{"vendor":"zyxel","product":"zld"}],"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4397"},{"url":"https://github.com/advisories/GHSA-rx6q-hj2g-x8wp"}],"sources":{"cve":[{"id":"CVE-2023-4397","description":"A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series firmware version 5.37, USG FLEX 50(W) series firmware version 5.37, and USG20(W)-VPN series firmware version 5.37, could allow an authenticated local attacker with administrator privileges to cause denial-of-service (DoS) conditions by executing the CLI command with crafted strings on an affected device.","status":"published","published":"2023-11-28T01:42:00.951Z","modified":"2024-08-02T07:24:04.592Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:35:30.116696Z"}],"euvd":[{"id":"EUVD-2023-54260","description":"A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series firmware version 5.37, USG FLEX 50(W) series firmware version 5.37, and USG20(W)-VPN series firmware version 5.37, could allow an authenticated local attacker with administrator privileges to cause denial-of-service (DoS) conditions by executing the CLI command with crafted strings on an affected device.","status":"published","published":"2023-11-28T01:42:00Z","modified":"2024-08-02T07:24:04Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T03:50:12.64889Z"}],"ghsa":[{"id":"GHSA-rx6q-hj2g-x8wp","title":"A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series...","description":"A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series firmware version 5.37, USG FLEX 50(W) series firmware version 5.37, and USG20(W)-VPN series firmware version 5.37, could allow an authenticated local attacker with administrator privileges to cause denial-of-service (DoS) conditions by executing the CLI command with crafted strings on an affected device.","status":"published","published":"2023-11-28T03:30:22Z","modified":"2023-11-28T03:30:28Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:55:06.860566Z"}],"nvd":[{"id":"CVE-2023-4397","description":"A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series firmware version 5.37, USG FLEX 50(W) series firmware version 5.37, and USG20(W)-VPN series firmware version 5.37, could allow an authenticated local attacker with administrator privileges to cause denial-of-service (DoS) conditions by executing the CLI command with crafted strings on an affected device.","status":"published","published":"2023-11-28T02:15:42.99Z","modified":"2026-06-17T06:37:44.797Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:08:49.393375Z"}]}}