{"id":"CVE-2024-40890","url":"https://www.cyber-defence.io/tools/cve/CVE-2024-40890","generatedAt":"2026-10-31T08:11:48.792Z","title":"Zyxel DSL CPE OS Command Injection Vulnerability","description":"**UNSUPPORTED WHEN ASSIGNED**\nA post-authentication command injection vulnerability in the CGI program of the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an authenticated attacker to execute operating system (OS) commands on an affected device by sending a crafted HTTP POST request.","published":"2025-02-04T10:15:09.000Z","lastModified":"2026-06-17T07:46:48.000Z","status":"Analyzed","sourceIdentifier":"security@zyxel.com.tw","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-78"],"affected":["zyxel/vmg1312-b10a firmware","zyxel/vmg1312-b10b firmware","zyxel/vmg1312-b10e firmware","zyxel/vmg3312-b10a firmware","zyxel/vmg3313-b10a firmware","zyxel/vmg3926-b10b firmware","zyxel/vmg4325-b10a firmware","zyxel/vmg4380-b10a firmware","zyxel/vmg8324-b10a firmware","zyxel/vmg8924-b10a firmware","zyxel/sbg3300-n000 firmware","zyxel/sbg3300-nb00 firmware","zyxel/sbg3500-n000 firmware","zyxel/sbg3500-nb00 firmware"],"epss":{"score":0.20703,"percentile":0.97529,"date":"2026-10-30","history":[{"date":"2026-09-24","score":0.20703,"percentile":0.9745}]},"kev":{"listed":true,"dateAdded":"2025-02-11","dueDate":"2025-03-04","knownRansomwareCampaignUse":"Unknown","notes":"The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.\nhttps://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-insecure-default-credentials-vulnerabilities-in-certain-legacy-dsl-cpe-02-04-2025 ; https://www.zyxel.com/service-provider/global/en/security-advisories/zyxel-security-advisory-command-injection-insecure-in-certain-legacy-dsl-cpe-02-04-2025 ; https://nvd.nist.gov/vuln/detail/CVE-2024-40890"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 4 March 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-insecure-default-credentials-vulnerabilities-in-certain-legacy-dsl-cpe-02-04-2025","tags":["Vendor Advisory"],"source":"security@zyxel.com.tw"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-40890","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-40890","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}