{"schemaVersion":3,"id":"CVE-2026-1459","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A post-authentication command injection vulnerability in the TR-369 certificate download CGI program of the Zyxel VMG3625-T50B firmware versions through 5.50(ABPM.9.7)C0 could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on an affected device.","dates":{"published":"2026-02-24T02:48:35.439Z","modified":"2026-02-26T14:44:10.011Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.2,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:H/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":7.2,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:H/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":7.2,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00918,"percentile":0.59795,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.016000000000000042,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00902},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00918,"percentile":0.59795}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00902,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00918,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00918,"percentile":0.59795}]},"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":"dx5401-b1_firmware","name":"dx5401-b1 firmware","label":"dx5401-b1_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≤ 5.17\\(abyo.7.1\\)c0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.17\\(abyo.7.1\\)c0","eol":null,"hubHref":"/vendor/zyxel/dx5401-b1"},{"vendor":"zyxel","product":"emg3525-t50b_firmware","name":"emg3525-t50b firmware","label":"emg3525-t50b_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≤ 5.50\\(abpm.9.7\\)c0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.50\\(abpm.9.7\\)c0","eol":null,"hubHref":"/vendor/zyxel/emg3525-t50b"},{"vendor":"zyxel","product":"emg5523-t50b_firmware","name":"emg5523-t50b firmware","label":"emg5523-t50b_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≤ 5.50\\(abpm.9.7\\)c0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.50\\(abpm.9.7\\)c0","eol":null,"hubHref":"/vendor/zyxel/emg5523-t50b"},{"vendor":"zyxel","product":"vmg3625-t50b_firmware","name":"vmg3625-t50b firmware","label":"vmg3625-t50b_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≤ 5.50\\(abpm.9.7\\)c0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.50\\(abpm.9.7\\)c0","eol":null,"hubHref":"/vendor/zyxel/vmg3625-t50b"},{"vendor":"zyxel","product":"vmg3625-t50b firmware","name":"VMG3625-T50B firmware","label":"vmg3625-t50b firmware","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 5.50(ABPM.9.7)C0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.50(ABPM.9.7)C0","eol":null,"hubHref":"/vendor/zyxel/vmg3625-t50b_firmware"},{"vendor":"zyxel","product":"vmg3625-t50c_firmware","name":"vmg3625-t50c firmware","label":"vmg3625-t50c_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≤ 5.50\\(abpm.9.7\\)c0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.50\\(abpm.9.7\\)c0","eol":null,"hubHref":"/vendor/zyxel/vmg3625-t50c"},{"vendor":"zyxel","product":"vmg8623-t50b_firmware","name":"vmg8623-t50b firmware","label":"vmg8623-t50b_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≤ 5.50\\(abpm.9.7\\)c0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.50\\(abpm.9.7\\)c0","eol":null,"hubHref":"/vendor/zyxel/vmg8623-t50b"}],"affectedCount":7,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-null-pointer-dereference-and-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-security-routers-and-wireless-extenders-02-24-2026","label":"www.zyxel.com/global/…","hostname":"www.zyxel.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-02-24T02:48:35.439Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-02-26T14:44:10.011Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":29,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T20:59:27.477Z","stale":false,"partial":false}}