CVE-2024-40890

Zyxel VMG4325-B10A firmware

Published 4 Feb 2025 · updated 17 Jun 2026 · Analyzed

8.8 High · CVSS 3.1, zyxel.com.tw

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 11 Feb 2025, with a remediation deadline of 4 Mar 2025 for US federal agencies.

Required action: 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.

Description

**UNSUPPORTED WHEN ASSIGNED** A 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.

References

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 · Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-40890 · US Government Resource