CVE-2022-40603

MEDIUM

Zyxel Firewalls and VPN Devices 4.30-5.31 - Cross-Site Scripting via CGI Program

Title source: llm
STIX 2.1

Description

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.

References (1)

Core 1

Scores

CVSS v3 4.7
EPSS 0.0067
EPSS Percentile 71.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (19)
zyxel/atp100_firmware 4.32 - 5.31
zyxel/atp100w_firmware 4.32 - 5.31
zyxel/atp200_firmware 4.32 - 5.31
zyxel/atp500_firmware 4.32 - 5.31
zyxel/atp700_firmware 4.32 - 5.31
zyxel/atp800_firmware 4.32 - 5.31
zyxel/usg40_firmware 4.30 - 4.72
zyxel/usg40w_firmware 4.30 - 4.72
zyxel/usg60_firmware 4.30 - 4.72
zyxel/usg60w_firmware 4.30 - 4.72
... and 9 more
Published Dec 06, 2022
Tracked Since Feb 18, 2026