NetSight
medium4.8

CVE-2023-27990

The cross-site scripting (XSS) vulnerability in Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG …

Impact

The cross-site scripting (XSS) vulnerability in Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow an authenticated attacker with administrator privileges to store malicious scripts in a vulnerable device. A successful XSS attack could then result in the stored malicious scripts being executed when the user visits the Logs page of the GUI on the device.

Affected products

VendorProductAffected versions
ZyxelAtp200 Firmware
from 4.32 before 5.36
ZyxelAtp100 Firmware
from 4.32 before 5.36
ZyxelAtp700 Firmware
from 4.32 before 5.36
ZyxelAtp500 Firmware
from 4.32 before 5.36
ZyxelAtp100w Firmware
from 4.32 before 5.36
ZyxelAtp800 Firmware
from 4.32 before 5.36
ZyxelUsg Flex 100 Firmware
from 4.50 before 5.36
ZyxelUsg Flex 50 Firmware
from 4.50 before 5.36
ZyxelUsg Flex 200 Firmware
from 4.50 before 5.36
ZyxelUsg Flex 500 Firmware
from 4.50 before 5.36
ZyxelUsg Flex 700 Firmware
from 4.50 before 5.36
ZyxelUsg Flex 100w Firmware
from 4.50 before 5.36

Weakness classification

References