Description
A post-authentication command injection vulnerability in Zyxel ATP series firmware versions from V5.00 through V5.38, USG FLEX series firmware versions from V5.00 through V5.38, USG FLEX 50(W) series firmware versions from V5.00 through V5.38, and USG20(W)-VPN series firmware versions from V5.00 through V5.38 could allow an authenticated attacker with administrator privileges to execute some OS commands on an affected device by uploading a crafted compressed language file via FTP.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Zyxel / ATP series firmwareversions V5.00 through V5.38 – versions V5.00 through V5.38
- Zyxel / USG20(W)-VPN series firmwareversions V5.00 through V5.38 – versions V5.00 through V5.38
- Zyxel / USG FLEX 50(W) series firmwareversions V5.00 through V5.38 – versions V5.00 through V5.38
- Zyxel / USG FLEX series firmwareversions V5.00 through V5.38 – versions V5.00 through V5.38