CVE-2024-40891: OS Command Injection
First published: Tue Feb 04 2025(Updated: )
**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the management commands 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 via Telnet.
Credit: security@zyxel.com.tw
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zyxel VMG4325-B10A |
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Reference Links
- https://www.bleepingcomputer.com/news/security/hackers-exploit-critical-unpatched-flaw-in-zyxel-cpe-devices/
- https://www.darkreading.com/endpoint-security/unpatched-zyxel-cpe-zero-day-cyberattackers
- 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
- https://www.bleepingcomputer.com/news/security/zyxel-wont-patch-newly-exploited-flaws-in-end-of-life-routers/
Frequently Asked Questions
What is the severity of CVE-2024-40891?
The severity of CVE-2024-40891 is considered high due to its potential for command injection by authenticated attackers.
How do I fix CVE-2024-40891?
To fix CVE-2024-40891, it is recommended to upgrade to a newer firmware version that addresses this vulnerability.
Which devices are affected by CVE-2024-40891?
CVE-2024-40891 specifically affects the Zyxel VMG4325-B10A device running firmware version 1.00(AAFR.4)C0_20170615.
What type of vulnerability is CVE-2024-40891?
CVE-2024-40891 is a post-authentication command injection vulnerability.
Can CVE-2024-40891 be exploited remotely?
CVE-2024-40891 requires authentication, so it cannot be exploited remotely without valid access credentials.
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