CVE-2024-11253: dm4200-b0 Command Injection — Fix

Description

A post-authentication command injection vulnerability in the "DNSServer” parameter of the diagnostic function in the Zyxel VMG8825-T50K firmware version V5.50(ABOM.8.5)C0 and earlier could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on a vulnerable device.

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CVSS v3.1 Score

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-78 OS Command Injection

Affected Products

Vendor	Product	Versions
zyxel	emg5723-t50k_firmware	< 5.50\(abom.8.5\)c0
zyxel	emg5723-t50k	All
zyxel	dm4200-b0_firmware	< 5.17\(acbs.1\)c0
zyxel	dm4200-b0	All
zyxel	vmg3927-t50k_firmware	< 5.50\(abom.8.5\)c0
zyxel	vmg3927-t50k	All
zyxel	vmg4005-b50a_firmware	< 5.15\(abqa.2.3\)c0
zyxel	vmg4005-b50a	All
zyxel	vmg4005-b60a_firmware	< 5.15\(abqa.2.3\)c0
zyxel	vmg4005-b60a	All
zyxel	vmg8825-t50k_firmware	< 5.50\(abom.8.5\)c0
zyxel	vmg8825-t50k	All

References

Advisories & Patches

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerabilities-in-certain-dsl-ethernet-cpe-fiber-ont-and-wifi-extender-devices-03-11-2025

Frequently Asked Questions

What is CVE-2024-11253? +

A post-authentication command injection vulnerability in the "DNSServer” parameter of the diagnostic function in the Zyxel VMG8825-T50K firmware version V5.50(ABOM.8.5)C0 and earlier could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on a vulnerable device. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2024-11253? +

CVE-2024-11253 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-11253? +

CVE-2024-11253 affects products from zyxel, specifically: dm4200-b0, dm4200-b0_firmware, emg5723-t50k, emg5723-t50k_firmware, vmg3927-t50k, vmg3927-t50k_firmware, vmg4005-b50a, vmg4005-b50a_firmware, vmg4005-b60a, vmg4005-b60a_firmware, vmg8825-t50k, vmg8825-t50k_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-11253? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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