{"schemaVersion":3,"id":"CVE-2023-28767","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The configuration parser fails to sanitize user-controlled input in the Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions 5.00 through 5.36,  USG FLEX 50(W) series firmware versions 5.10 through 5.36,\n\nUSG20(W)-VPN series firmware versions 5.10 through 5.36, and VPN series firmware versions 5.00 through 5.36. An unauthenticated, LAN-based attacker could leverage the vulnerability to inject some operating system (OS) commands into the device configuration data on an affected device when the cloud management mode is enabled.","dates":{"published":"2023-07-17T16:59:45.258Z","modified":"2024-11-07T19:14:46.971Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00404,"percentile":0.33216,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00404},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00404,"percentile":0.33216}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00404,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00404,"percentile":0.33216}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","description":"The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/78.html"}],"affected":[{"vendor":"zyxel","product":"atp series firmware","name":"ATP series firmware","label":"atp series firmware","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"5.10 through 5.36","noFixRecorded":false,"fixedIn":null}],"versionsText":"5.10 through 5.36","eol":null,"hubHref":"/vendor/zyxel/atp_series_firmware"},{"vendor":"zyxel","product":"usg_20w-vpn_firmware","name":"usg 20w-vpn firmware","label":"usg_20w-vpn_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.10, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.10, < 5.37","eol":null,"hubHref":"/vendor/zyxel/usg_20w-vpn"},{"vendor":"zyxel","product":"usg_2200-vpn_firmware","name":"usg 2200-vpn firmware","label":"usg_2200-vpn_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/usg_2200-vpn"},{"vendor":"zyxel","product":"usg_flex_100_firmware","name":"usg flex 100 firmware","label":"usg_flex_100_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/usg_flex_100"},{"vendor":"zyxel","product":"usg_flex_100w_firmware","name":"usg flex 100w firmware","label":"usg_flex_100w_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/usg_flex_100w"},{"vendor":"zyxel","product":"usg_flex_200_firmware","name":"usg flex 200 firmware","label":"usg_flex_200_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/usg_flex_200"},{"vendor":"zyxel","product":"usg_flex_50_firmware","name":"usg flex 50 firmware","label":"usg_flex_50_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/usg_flex_50"},{"vendor":"zyxel","product":"usg_flex_500_firmware","name":"usg flex 500 firmware","label":"usg_flex_500_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/usg_flex_500"},{"vendor":"zyxel","product":"usg_flex_50w_firmware","name":"usg flex 50w firmware","label":"usg_flex_50w_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/usg_flex_50w"},{"vendor":"zyxel","product":"usg flex 50(w) series firmware","name":"USG FLEX 50(W) series firmware","label":"usg flex 50(w) series firmware","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"5.10 through 5.36","noFixRecorded":false,"fixedIn":null}],"versionsText":"5.10 through 5.36","eol":null,"hubHref":"/vendor/zyxel/usg_flex_50w_series_firmware"},{"vendor":"zyxel","product":"usg_flex_700_firmware","name":"usg flex 700 firmware","label":"usg_flex_700_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/usg_flex_700"},{"vendor":"zyxel","product":"usg flex series firmware","name":"USG FLEX series firmware","label":"usg flex series firmware","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"5.00 through 5.36","noFixRecorded":false,"fixedIn":null}],"versionsText":"5.00 through 5.36","eol":null,"hubHref":"/vendor/zyxel/usg_flex_series_firmware"},{"vendor":"zyxel","product":"usg20(w)-vpn series firmware","name":"USG20(W)-VPN series firmware","label":"usg20(w)-vpn series firmware","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"5.10 through 5.36","noFixRecorded":false,"fixedIn":null}],"versionsText":"5.10 through 5.36","eol":null,"hubHref":"/vendor/zyxel/usg20w-vpn_series_firmware"},{"vendor":"zyxel","product":"vpn series firmware","name":"VPN series firmware","label":"vpn series firmware","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"5.00 through 5.36","noFixRecorded":false,"fixedIn":null}],"versionsText":"5.00 through 5.36","eol":null,"hubHref":"/vendor/zyxel/vpn_series_firmware"},{"vendor":"zyxel","product":"zywall_atp100_firmware","name":"zywall atp100 firmware","label":"zywall_atp100_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.10, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.10, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_atp100"},{"vendor":"zyxel","product":"zywall_atp100w_firmware","name":"zywall atp100w firmware","label":"zywall_atp100w_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.10, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.10, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_atp100w"},{"vendor":"zyxel","product":"zywall_atp200_firmware","name":"zywall atp200 firmware","label":"zywall_atp200_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.10, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.10, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_atp200"},{"vendor":"zyxel","product":"zywall_atp500_firmware","name":"zywall atp500 firmware","label":"zywall_atp500_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.10, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.10, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_atp500"},{"vendor":"zyxel","product":"zywall_atp700_firmware","name":"zywall atp700 firmware","label":"zywall_atp700_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.10, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.10, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_atp700"},{"vendor":"zyxel","product":"zywall_atp800_firmware","name":"zywall atp800 firmware","label":"zywall_atp800_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.10, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.10, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_atp800"},{"vendor":"zyxel","product":"zywall_vpn_100_firmware","name":"zywall vpn 100 firmware","label":"zywall_vpn_100_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_vpn_100"},{"vendor":"zyxel","product":"zywall_vpn_300_firmware","name":"zywall vpn 300 firmware","label":"zywall_vpn_300_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_vpn_300"},{"vendor":"zyxel","product":"zywall_vpn_50_firmware","name":"zywall vpn 50 firmware","label":"zywall_vpn_50_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_vpn_50"},{"vendor":"zyxel","product":"zywall_vpn100_firmware","name":"zywall vpn100 firmware","label":"zywall_vpn100_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_vpn100"},{"vendor":"zyxel","product":"zywall_vpn2s_firmware","name":"zywall vpn2s firmware","label":"zywall_vpn2s_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_vpn2s"},{"vendor":"zyxel","product":"zywall_vpn300_firmware","name":"zywall vpn300 firmware","label":"zywall_vpn300_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_vpn300"},{"vendor":"zyxel","product":"zywall_vpn50_firmware","name":"zywall vpn50 firmware","label":"zywall_vpn50_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 5.00, < 5.37","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.00, < 5.37","eol":null,"hubHref":"/vendor/zyxel/zywall_vpn50"}],"affectedCount":27,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers","label":"www.zyxel.com/global/…","hostname":"www.zyxel.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2023-07-17T16:59:45.258Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-11-07T19:14:46.971Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T20:17:21.533Z","stale":false,"partial":false}}