CVE-2026-12489: vulnerability facts

CVE-2026-12489

This page contains facts from public vulnerability sources. Check the original advisory before updating.

An incorrect authorization vulnerability in the Data Access Layer (DAL) of Zyxel EX3501-T0 firmware versions through 5.44(ACHR.6)C0 could allow an authenticated attacker to escalate privileges by modifying the login_privilege data on an affected device.

CVSS 6.5 · Medium · EPSS 0.2%

Published: 2026-10-20T02:04:49.838Z
Updated: 2026-10-21T03:56:12.843Z

Affected products and versions

ex3501-t0 firmware
Versions
- <= 5.44(ACHR.6)C0: Affected
No fix published

Original sources

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-incorrect-authorization-vulnerability-in-the-dal-of-certain-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-10-20-2026
https://nvd.nist.gov/vuln/detail/CVE-2026-12489

Check your server →

CVE-2026-12489

Affected products and versions

ex3501-t0 firmware

Original sources