CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NCVE-2022-0910
Medium (6.5) in zyxel. EPSS 0.7% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
- CWE
- CWE-287
- Published
- Modified
- Record from
- the NVD, synced
Affected
- zyxel:atp100_firmware
- zyxel:atp100w_firmware
- zyxel:atp200_firmware
- zyxel:atp500_firmware
- zyxel:atp700_firmware
- zyxel:atp800_firmware
- zyxel:usg200_firmware
- zyxel:usg20_firmware
- zyxel:usg210_firmware
- zyxel:usg2200_firmware
- zyxel:usg300_firmware
- zyxel:usg310_firmware
- zyxel:usg_1100_firmware
- zyxel:usg_110_firmware
- zyxel:usg_1900_firmware
- zyxel:usg_20w-vpn_firmware
- zyxel:usg_20w_firmware
- zyxel:usg_2200-vpn_firmware
- zyxel:usg_310_firmware
- zyxel:usg_40_firmware
- zyxel:usg_40w_firmware
- zyxel:usg_60_firmware
- zyxel:usg_60w_firmware
- zyxel:usg_flex_100_firmware
- zyxel:usg_flex_100w_firmware
- zyxel:usg_flex_200_firmware
- zyxel:usg_flex_500_firmware
- zyxel:usg_flex_700_firmware
- zyxel:vpn1000_firmware
- zyxel:vpn100_firmware
- zyxel:vpn300_firmware
- zyxel:vpn50_firmware