Is CVE-2026-1459 actively exploited?

CVE-2026-1459 has no public evidence of in-the-wild exploitation as of 2026-02-25.

What is the CVSS score for CVE-2026-1459?

CVE-2026-1459 has a CVSS score of 7.2 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-1459?

Patch guidance is available from zyxel security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-1459.

Fix CVE-2026-1459 - HIGH zyxel vmg8623-t50b firmware

Q: Which products are affected by CVE-2026-1459?

6 products: zyxel vmg8623-t50b firmware, zyxel dx5401-b1 firmware, zyxel emg3525-t50b firmware, zyxel emg5523-t50b firmware, zyxel vmg3625-t50b firmware, and 1 more.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: high
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-78 · OS Command Injection

Metadata

Primary Vendor: ZYXEL
Published: 2/24/2026
Last Modified: 2/25/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

zyxel : vmg8623-t50b_firmwarezyxel : dx5401-b1_firmwarezyxel : emg3525-t50b_firmwarezyxel : emg5523-t50b_firmwarezyxel : vmg3625-t50b_firmwarezyxel : vmg3625-t50c_firmware

Remediation Guidance

Executive Summary

View on NIST NVD