medium6.5
CVE-2022-0910
A downgrade from two-factor authentication to one-factor authentication vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.32 thro…
Impact
A downgrade from two-factor authentication to one-factor authentication vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.32 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, and VPN series firmware versions 4.32 through 5.21, that could allow an authenticated attacker to bypass the second authentication phase to connect the IPsec VPN server even though the two-factor authentication (2FA) was enabled.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Zyxel | Vpn100 Firmware | from 4.32 through 5.21 |
| Zyxel | Vpn1000 Firmware | from 4.32 through 5.21 |
| Zyxel | Vpn300 Firmware | from 4.32 through 5.21 |
| Zyxel | Vpn50 Firmware | from 4.32 through 5.21 |
| Zyxel | Atp100 Firmware | from 4.32 through 5.21 |
| Zyxel | Atp100w Firmware | from 4.32 through 5.21 |
| Zyxel | Atp200 Firmware | from 4.32 through 5.21 |
| Zyxel | Atp500 Firmware | from 4.32 through 5.21 |
| Zyxel | Atp700 Firmware | from 4.32 through 5.21 |
| Zyxel | Atp800 Firmware | from 4.32 through 5.21 |
| Zyxel | Usg 110 Firmware | from 4.32 through 4.71 |
| Zyxel | Usg 1100 Firmware | from 4.32 through 4.71 |