CVE-2024-40890: Zyxel DSL CPE OS Command Injection Vulnerability
CVE-2024-40890 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2025-02-11
A post-authentication command injection vulnerability in the CGI program of several legacy Zyxel DSL CPE devices allows an authenticated attacker to execute arbitrary operating system commands via crafted HTTP POST requests. The vulnerability affects multiple end-of-life models including the VMG and SBG series.
Yes. CVE-2024-40890 is known to be exploited in the wild, first recorded on 11 February 2025. Treat it as urgent.
How severe is CVE-2024-40890?
Critical severity, with a CVSS score of 8.8, published 11 February 2025.
Which products and versions are affected?
Zyxel VMG4325-B10A firmware 1.00(AAFR.4)C0_20170615; Zyxel SBG3300-N000; Zyxel SBG3300-NB00; Zyxel SBG3500-N000; and 10 more.
Is there a fix for CVE-2024-40890?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2024-40890 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2024-40890?
Check whether you run Zyxel DSL CPE Devices. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.