critical9.8
CVE-2022-0342
An authentication bypass vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.20 through 4.70, USG FLEX series firmware versions 4.5…
Impact
An authentication bypass vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.20 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.32 through 5.20, VPN series firmware versions 4.30 through 5.20, and NSG series firmware versions V1.20 through V1.33 Patch 4, which could allow an attacker to bypass the web authentication and obtain administrative access of the device.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Zyxel | Usg40 Firmware | from 4.20 before 4.71 |
| Zyxel | Usg40w Firmware | from 4.20 before 4.71 |
| Zyxel | Usg60 Firmware | from 4.20 before 4.71 |
| Zyxel | Usg60w Firmware | from 4.20 before 4.71 |
| Zyxel | Zywall 110 Firmware | from 4.20 before 4.71 |
| Zyxel | Zywall 310 Firmware | from 4.20 before 4.71 |
| Zyxel | Zywall 1100 Firmware | from 4.20 before 4.71 |
| Zyxel | Usg Flex 100 Firmware | from 4.50 through 5.20 |
| Zyxel | Usg Flex 200 Firmware | from 4.50 through 5.20 |
| Zyxel | Usg Flex 500 Firmware | from 4.50 through 5.20 |
| Zyxel | Usg Flex 100w Firmware | from 4.50 through 5.20 |
| Zyxel | Usg Flex 700 Firmware | from 4.50 through 5.20 |