CVE-2022-40603 MEDIUM

CVE-2022-40603

Vendor Zyxel
Product ZyWALL/USG series firmware
Weakness CWE-79 · XSS
Published December 6, 2022
Last update April 23, 2025

CVSS base score

4.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser.

Key dates

02Disclosure timeline

December 6, 2022 CVE published
April 23, 2025 Record updated