CVE-2026-12489

MEDIUM 6.5

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	zyxel
Product	ex3501-t0 firmware
Published	Oct 20, 2026

Stay Ahead of the Next One

Get instant alerts for zyxel ex3501-t0 firmware

Be the first to know when new medium vulnerabilities affecting zyxel ex3501-t0 firmware are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

Zyxel / EX3501-T0 firmware

<= 5.44(ACHR.6)C0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

zyxel.com: 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