CVE-2026-12489

MEDIUM CVSS 3.1: 6.5 EPSS 0.29%
Updated Oct 20, 2026
Zyxel
Parameter Value
CVSS 6.5 (MEDIUM)
Type CWE-863 (Incorrect Authorization)
Vendor Zyxel
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1

Vulnerable Products

zyxel:ex3501-t0 firmware