CVE-2026-1459

Published: Feb 24, 2026Modified: Jun 17, 2026

7.2

Vector

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

Exploitability: 1.2 / Impact: 5.9

Source: NVD

Description

A post-authentication command injection vulnerability in the TR-369 certificate download CGI program of the Zyxel VMG3625-T50B firmware versions through 5.50(ABPM.9.7)C0 could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on an affected device.

Affected (6)

Products: Zyxel: Vmg3625 T50c Firmware, Vmg3625 T50b Firmware, Emg5523 T50b Firmware, Emg3525 T50b Firmware, Dx5401 B1 Firmware, Vmg8623 T50b Firmware

Zyxel

6 products

Vmg3625 T50c Firmware

Vmg3625 T50b Firmware

Emg5523 T50b Firmware

Emg3525 T50b Firmware

Dx5401 B1 Firmware

Vmg8623 T50b Firmware

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Vmg3625 T50c Firmware	Up to 5.50\(abpm.9.7\)c0

Running on/with	Platform Versions
Zyxel Vmg3625 T50c	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Vmg3625 T50b Firmware	Up to 5.50\(abpm.9.7\)c0

Running on/with	Platform Versions
Zyxel Vmg3625 T50b	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Emg5523 T50b Firmware	Up to 5.50\(abpm.9.7\)c0

Running on/with	Platform Versions
Zyxel Emg5523 T50b	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Emg3525 T50b Firmware	Up to 5.50\(abpm.9.7\)c0

Running on/with	Platform Versions
Zyxel Emg3525 T50b	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Dx5401 B1 Firmware	Up to 5.17\(abyo.7.1\)c0

Running on/with	Platform Versions
Zyxel Dx5401 B1	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Vmg8623 T50b Firmware	Up to 5.50\(abpm.9.7\)c0

Running on/with	Platform Versions
Zyxel Vmg8623 T50b	All versions

Related CWEs

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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.

References (1)

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-null-pointer-dereference-and-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-security-routers-and-wireless-extenders-02-24-2026

Source: security@zyxel.com.tw

Vendor Advisory

Timeline

No history available yet.