{"id":"CVE-2023-27988","aliases":["EUVD-2023-31713","GHSA-wc8j-6g5m-3r95"],"status":"published","title":"The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions...","description":"The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device remotely.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01363,"percentile":0.7201,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2023-05-30T00:00:00Z","modified":"2026-06-17T05:46:19Z","products":[{"vendor":"zyxel","product":"nas326 firmware"},{"vendor":"zyxel","product":"nas326_firmware"},{"vendor":"zyxel","product":"nas540_firmware"},{"vendor":"zyxel","product":"nas542_firmware"}],"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-nas-products","tags":["x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-27988"},{"url":"https://github.com/advisories/GHSA-wc8j-6g5m-3r95"}],"sources":{"cve":[{"id":"CVE-2023-27988","description":"The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device remotely.","status":"published","published":"2023-05-30T00:00:00Z","modified":"2025-01-14T16:26:24.864Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:35:26.63732Z"}],"euvd":[{"id":"EUVD-2023-31713","description":"The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device remotely.","status":"published","published":"2023-05-30T00:00:00Z","modified":"2025-01-14T16:26:24Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:19.834715Z"}],"ghsa":[{"id":"GHSA-wc8j-6g5m-3r95","title":"The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions...","description":"The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device remotely.","status":"published","published":"2023-05-30T03:30:14Z","modified":"2024-04-04T04:22:54Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:56:23.412856Z"}],"nvd":[{"id":"CVE-2023-27988","description":"The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device remotely.","status":"published","published":"2023-05-30T02:15:33.533Z","modified":"2026-06-17T05:46:19.453Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:08:03.795015Z"}]}}