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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None
Affected products
- Zyxel / ATP series firmware4.32 through 5.31 – 4.32 through 5.31
- Zyxel / USG FLEX series firmware4.50 through 5.31 – 4.50 through 5.31
- Zyxel / VPN series firmware4.30 through 5.31 – 4.30 through 5.31
- Zyxel / ZyWALL/USG series firmware4.30 through 4.72 – 4.30 through 4.72