CVE-2024-40891: Zyxel DSL CPE OS Command Injection Vulnerability
CVE-2024-40891 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2025-02-11
Multiple legacy Zyxel DSL CPE devices contain a post-authentication command injection vulnerability in management commands. An authenticated attacker can execute arbitrary operating system commands on the affected device via Telnet.
Yes. CVE-2024-40891 is known to be exploited in the wild, first recorded on 11 February 2025. Treat it as urgent.
How severe is CVE-2024-40891?
Critical severity, with a CVSS score of 8.8, published 11 February 2025.
Which products and versions are affected?
Zyxel Corporation VMG4325-B10A firmware 1.00(AAFR.4)C0_20170615; Zyxel Corporation SBG3300-N000; Zyxel Corporation SBG3300-NB00; Zyxel Corporation SBG3500-N000; and 10 more.
Is there a fix for CVE-2024-40891?
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-2024-40891 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2024-40891?
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.