Description
A cross-site scripting vulnerability was identified in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.35 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.35 through 5.20, and VPN series firmware versions 4.35 through 5.20, that could allow an attacker to obtain some information stored in the user's browser, such as cookies or session tokens, via a malicious script.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None
Affected products
- Zyxel / ATP series firmware4.35 through 5.20 – 4.35 through 5.20
- Zyxel / USG FLEX series firmware4.50 through 5.20 – 4.50 through 5.20
- Zyxel / USG/ZyWALL series firmware4.35 through 4.70 – 4.35 through 4.70
- Zyxel / VPN series firmware4.35 through 5.20 – 4.35 through 5.20