CVE-2026-1459
Post-Auth Command Injection in Zyxel VMG3625-T50B Firmware
Publication date: 2026-02-24
Last updated on: 2026-02-25
Assigner: Zyxel Corporation
Description
Description
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| zyxel | vmg8623-t50b_firmware | to 5.50(abpm.9.7 (inc) |
| zyxel | dx5401-b1_firmware | to 5.17(abyo.7.1 (inc) |
| zyxel | emg3525-t50b_firmware | to 5.50(abpm.9.7 (inc) |
| zyxel | emg5523-t50b_firmware | to 5.50(abpm.9.7 (inc) |
| zyxel | vmg3625-t50b_firmware | to 5.50(abpm.9.7 (inc) |
| zyxel | vmg3625-t50c_firmware | to 5.50(abpm.9.7 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-78 | The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a post-authentication command injection issue found in the TR-369 certificate download CGI program of the Zyxel VMG3625-T50B device firmware versions up to 5.50(ABPM.9.7)C0.
An attacker who is already authenticated with administrator privileges can exploit this flaw to execute arbitrary operating system commands on the affected device.
How can this vulnerability impact me? :
If exploited, this vulnerability allows an attacker with admin access to run OS commands on the device, potentially leading to full control over the device.
- Compromise of device integrity and availability.
- Unauthorized access to sensitive data or network resources.
- Potential disruption of network services relying on the device.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know