Description
A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.09 through 4.72, which could allow a local attacker to execute some OS commands with root privileges in some directories on a vulnerable device.
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Zyxel / ATP series firmware4.32 through 5.30 – 4.32 through 5.30
- Zyxel / USG 20(W)-VPN firmware4.16 through 5.30 – 4.16 through 5.30
- Zyxel / USG FLEX 100(W) firmware4.50 through 5.30 – 4.50 through 5.30
- Zyxel / USG FLEX 200 firmware4.50 through 5.30 – 4.50 through 5.30
- Zyxel / USG FLEX 500 firmware4.50 through 5.30 – 4.50 through 5.30
- Zyxel / USG FLEX 50(W) firmware4.16 through 5.30 – 4.16 through 5.30
- Zyxel / USG FLEX 700 firmware4.50 through 5.30 – 4.50 through 5.30
- Zyxel / USG/ZyWALL series firmware4.09 through 4.72 – 4.09 through 4.72
- Zyxel / VPN series firmware4.30 through 5.30 – 4.30 through 5.30