{"cve":"CVE-2023-6398","nvd":{"published":"2024-02-20T02:15:49.110","modified":"2026-06-17T06:50:41.073","status":"Analyzed","description":"A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, \n\nUSG FLEX H series firmware versions from 1.10 through 1.10 Patch 1,\n\nNWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware versions through 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":7.2},"cwes":["CWE-78"],"references":["https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024","https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024"],"products":["zyxel:atp100_firmware","zyxel:atp100w_firmware","zyxel:atp200_firmware","zyxel:atp500_firmware","zyxel:atp700_firmware","zyxel:atp800_firmware","zyxel:nwa110ax_firmware","zyxel:nwa1123acv3_firmware","zyxel:nwa210ax_firmware","zyxel:nwa220ax-6e_firmware","zyxel:nwa50ax-pro_firmware","zyxel:nwa50ax_firmware","zyxel:nwa55axe_firmware","zyxel:nwa90ax-pro_firmware","zyxel:nwa90ax_firmware","zyxel:uos","zyxel:usg20-vpn_firmware","zyxel:usg20w-vpn_firmware","zyxel:usg_flex_100_firmware","zyxel:usg_flex_100ax_firmware","zyxel:usg_flex_100h_firmware","zyxel:usg_flex_100w_firmware","zyxel:usg_flex_200_firmware","zyxel:usg_flex_200h_firmware","zyxel:usg_flex_200hp_firmware","zyxel:usg_flex_500_firmware","zyxel:usg_flex_500h_firmware","zyxel:usg_flex_50_firmware","zyxel:usg_flex_50w_firmware","zyxel:usg_flex_700_firmware","zyxel:usg_flex_700h_firmware","zyxel:wac500_firmware","zyxel:wac500h_firmware","zyxel:wax300h_firmware","zyxel:wax510d_firmware","zyxel:wax610d_firmware","zyxel:wax620d-6e_firmware","zyxel:wax630s_firmware","zyxel:wax640s-6e_firmware","zyxel:wax650s_firmware","zyxel:wax655e_firmware","zyxel:wbe660s_firmware"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2023-6398","score":0.01333,"percentile":0.71126,"date":"2026-11-01"},"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."]}