{"id":"CVE-2021-35028","aliases":["EUVD-2021-21675","GHSA-qfm3-mj8g-3hm7"],"status":"published","title":"A command injection vulnerability in the CGI program of the Zyxel VPN2S firmware version 1.12...","description":"A command injection vulnerability in the CGI program of the Zyxel VPN2S firmware version 1.12 could allow an authenticated, local user to execute arbitrary OS commands.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00305,"percentile":0.23641,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2021-09-29T10:35:57Z","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-2021-35028"},{"url":"https://github.com/advisories/GHSA-qfm3-mj8g-3hm7"}],"sources":{"cve":[{"id":"CVE-2021-35028","description":"A command injection vulnerability in the CGI program of the Zyxel VPN2S firmware version 1.12 could allow an authenticated, local user to execute arbitrary OS commands.","status":"published","published":"2021-09-29T10:35:57Z","modified":"2024-08-04T00:33:49.83Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-21675","description":"A command injection vulnerability in the CGI program of the Zyxel VPN2S firmware version 1.12 could allow an authenticated, local user to execute arbitrary OS commands.","status":"published","published":"2021-09-29T10:35:57Z","modified":"2024-08-04T00:33:49Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:24:31.533826Z"}],"ghsa":[{"id":"GHSA-qfm3-mj8g-3hm7","title":"A command injection vulnerability in the CGI program of the Zyxel VPN2S firmware version 1.12...","description":"A command injection vulnerability in the CGI program of the Zyxel VPN2S firmware version 1.12 could allow an authenticated, local user to execute arbitrary OS commands.","status":"published","published":"2022-05-24T19:16:09Z","modified":"2023-01-30T05:02:30Z","cwes":["CWE-78"],"updated_at":"2026-11-02T14:46:39.405598Z"}],"nvd":[{"id":"CVE-2021-35028","description":"A command injection vulnerability in the CGI program of the Zyxel VPN2S firmware version 1.12 could allow an authenticated, local user to execute arbitrary OS commands.","status":"published","published":"2021-09-29T11:15:07.547Z","modified":"2026-06-17T03:56:58.367Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:06:59.314106Z"}]}}