{"id":"CVE-2023-33012","aliases":["EUVD-2023-37201","GHSA-r34v-7h65-289c"],"status":"published","title":"A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware...","description":"A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2,  USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted GRE configuration when the cloud management mode is enabled.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.09882,"percentile":0.95603,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-78"],"published":"2023-07-17T17:23:26Z","modified":"2026-06-17T06:00:17Z","exploits":[{"source":"metasploit","id":"exploit/linux/http/zyxel_parse_config_rce","title":"Zyxel parse_config.py Command Injection","type":"exploit","platform":"Linux,Unix","date":"2024-01-24","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/linux/http/zyxel_parse_config_rce"}],"products":[{"vendor":"zyxel","product":"atp series firmware"},{"vendor":"zyxel","product":"usg flex 50(w) series firmware"},{"vendor":"zyxel","product":"usg flex series firmware"},{"vendor":"zyxel","product":"usg20(w)-vpn series firmware"},{"vendor":"zyxel","product":"usg_20w-vpn_firmware"},{"vendor":"zyxel","product":"usg_2200-vpn_firmware"},{"vendor":"zyxel","product":"usg_flex_100_firmware"},{"vendor":"zyxel","product":"usg_flex_100w_firmware"},{"vendor":"zyxel","product":"usg_flex_200_firmware"},{"vendor":"zyxel","product":"usg_flex_500_firmware"},{"vendor":"zyxel","product":"usg_flex_50_firmware"},{"vendor":"zyxel","product":"usg_flex_50w_firmware"},{"vendor":"zyxel","product":"usg_flex_700_firmware"},{"vendor":"zyxel","product":"vpn series firmware"},{"vendor":"zyxel","product":"zywall_atp100_firmware"},{"vendor":"zyxel","product":"zywall_atp100w_firmware"},{"vendor":"zyxel","product":"zywall_atp200_firmware"},{"vendor":"zyxel","product":"zywall_atp500_firmware"},{"vendor":"zyxel","product":"zywall_atp700_firmware"},{"vendor":"zyxel","product":"zywall_atp800_firmware"},{"vendor":"zyxel","product":"zywall_vpn100_firmware"},{"vendor":"zyxel","product":"zywall_vpn2s_firmware"},{"vendor":"zyxel","product":"zywall_vpn300_firmware"},{"vendor":"zyxel","product":"zywall_vpn50_firmware"},{"vendor":"zyxel","product":"zywall_vpn_100_firmware"},{"vendor":"zyxel","product":"zywall_vpn_300_firmware"},{"vendor":"zyxel","product":"zywall_vpn_50_firmware"}],"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-33012"},{"url":"https://github.com/advisories/GHSA-r34v-7h65-289c"}],"sources":{"cve":[{"id":"CVE-2023-33012","description":"A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2,  USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted GRE configuration when the cloud management mode is enabled.","status":"published","published":"2023-07-17T17:23:26.37Z","modified":"2025-03-05T18:48:53.862Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:35:34.170609Z"}],"euvd":[{"id":"EUVD-2023-37201","description":"A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2,  USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted GRE configuration when the cloud management mode is enabled.","status":"published","published":"2023-07-17T17:23:26Z","modified":"2025-03-05T18:48:53Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:53:13.319718Z"}],"ghsa":[{"id":"GHSA-r34v-7h65-289c","title":"A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware...","description":"A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2,  USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted GRE configuration when the cloud management mode is enabled.","status":"published","published":"2023-07-17T18:31:28Z","modified":"2024-04-04T06:11:27Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:56:39.852376Z"}],"nvd":[{"id":"CVE-2023-33012","description":"A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2,  USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted GRE configuration when the cloud management mode is enabled.","status":"published","published":"2023-07-17T18:15:09.473Z","modified":"2026-06-17T06:00:17.427Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:08:17.044696Z"}]}}