CVE-2026-12489: EX3501-T0 firmware <= 5.44(ACHR.6)C0

Affected technology

EX3501-T0 firmware · <= 5.44(ACHR.6)C0
Zyxel

Description’s affected range: versions through 5.44(ACHR.6)C0 could

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

An authenticated attacker could escalate privileges by modifying the login_privilege data on an affected device. Vendor/CNA’s CVSS 3.1 assessment (base score 6.5/10) rates confidentiality impact as high; integrity and availability impact as none.