{"id":"CVE-2021-35027","aliases":["EUVD-2021-21674","GHSA-gf8r-6336-2wmx"],"status":"published","title":"A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12...","description":"A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12 could allow a remote attacker to gain access to sensitive information.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.02045,"percentile":0.81477,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22","CWE-27"],"published":"2021-09-29T10:32:04Z","modified":"2026-06-17T03:56:58Z","products":[{"vendor":"zyxel","product":"zywall vpn2s firmware"},{"vendor":"zyxel","product":"zywall_vpn2s_firmware"}],"references":[{"url":"https://www.zyxel.com/support/Zyxel_security_advisory_for_directory_traversal_and_command_injection_vulnerabilities_of_VPN2S_Firewall.shtml","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35027"},{"url":"https://github.com/advisories/GHSA-gf8r-6336-2wmx"}],"sources":{"cve":[{"id":"CVE-2021-35027","description":"A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12 could allow a remote attacker to gain access to sensitive information.","status":"published","published":"2021-09-29T10:32:04Z","modified":"2024-08-04T00:26:55.923Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-27"],"updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-21674","description":"A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12 could allow a remote attacker to gain access to sensitive information.","status":"published","published":"2021-09-29T10:32:04Z","modified":"2024-08-04T00:26:55Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-03T03:24:31.533826Z"}],"ghsa":[{"id":"GHSA-gf8r-6336-2wmx","title":"A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12...","description":"A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12 could allow a remote attacker to gain access to sensitive information.","status":"published","published":"2022-05-24T19:16:09Z","modified":"2023-01-30T05:02:29Z","cwes":["CWE-22"],"updated_at":"2026-11-02T14:46:38.945282Z"}],"nvd":[{"id":"CVE-2021-35027","description":"A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12 could allow a remote attacker to gain access to sensitive information.","status":"published","published":"2021-09-29T11:15:07.497Z","modified":"2026-06-17T03:56:58.253Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-27","CWE-22"],"updated_at":"2026-11-02T14:06:59.314106Z"}]}}