{"id":"CVE-2023-28769","aliases":["EUVD-2023-32404","GHSA-xg39-26cw-gxj9"],"status":"published","title":"The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in...","description":"The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0542,"percentile":0.92767,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-120"],"published":"2023-04-27T00:00:00Z","modified":"2026-06-17T05:48:43Z","exploits":[{"source":"metasploit","id":"exploit/linux/misc/zyxel_multiple_devices_zhttp_lan_rce","title":"Zyxel Unauthenticated LAN Remote Code Execution","type":"exploit","platform":"Linux","date":"2022-02-01","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/linux/misc/zyxel_multiple_devices_zhttp_lan_rce"}],"products":[{"vendor":"zyxel","product":"dx5401-b0 firmware"},{"vendor":"zyxel","product":"dx5401-b0_firmware"}],"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28769"},{"url":"https://github.com/advisories/GHSA-xg39-26cw-gxj9"}],"sources":{"cve":[{"id":"CVE-2023-28769","description":"The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.","status":"published","published":"2023-04-27T00:00:00Z","modified":"2025-01-31T18:43:25.918Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:35:32.376766Z"}],"euvd":[{"id":"EUVD-2023-32404","description":"The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.","status":"published","published":"2023-04-27T00:00:00Z","modified":"2025-01-31T18:43:25Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:04:07.748787Z"}],"ghsa":[{"id":"GHSA-xg39-26cw-gxj9","title":"The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in...","description":"The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.","status":"published","published":"2023-07-06T19:24:19Z","modified":"2024-04-04T05:38:23Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:56:34.38901Z"}],"nvd":[{"id":"CVE-2023-28769","description":"The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.","status":"published","published":"2023-04-27T09:15:09.057Z","modified":"2026-06-17T05:48:43.907Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:07:59.151142Z"}]}}