CVE-2025-13943 HIGH

CVE-2025-13943

Vendor Zyxel
Product EX3301-T0 firmware
Weakness CWE-78
Published February 24, 2026
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A post-authentication command injection vulnerability in the log file download function of the Zyxel EX3301-T0 firmware versions through 5.50(ABVY.7)C0 could allow an authenticated attacker to execute operating system (OS) commands on an affected device.

Key dates

02Disclosure timeline

February 24, 2026 CVE published
February 26, 2026 Record updated