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 4.50 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.

• zyxel usg40 firmware (>= 4.20 < 4.71) • zyxel usg40w firmware (>= 4.20 < 4.71) • zyxel usg60 firmware (>= 4.20 < 4.71) • zyxel usg60w firmware (>= 4.20 < 4.71) • zyxel zywall 110 firmware (>= 4.20 < 4.71) • zyxel zywall 310 firmware (>= 4.20 < 4.71) • zyxel zywall 1100 firmware (>= 4.20 < 4.71) • zyxel usg flex 100 firmware (>= 4.50 <= 5.20) • zyxel usg flex 200 firmware (>= 4.50 <= 5.20) • zyxel usg flex 500 firmware (>= 4.50 <= 5.20) • zyxel usg flex 100w firmware (>= 4.50 <= 5.20) • zyxel usg flex 700 firmware (>= 4.50 <= 5.20) • zyxel atp100 firmware (>= 4.32 <= 5.20) • zyxel atp100w firmware (>= 4.32 <= 5.20) • zyxel atp200 firmware (>= 4.32 <= 5.20) • zyxel atp500 firmware (>= 4.32 <= 5.20) • zyxel atp700 firmware (>= 4.32 <= 5.20) • zyxel atp800 firmware (>= 4.32 <= 5.20) • zyxel vpn50 firmware (>= 4.30 < 5.21) • zyxel vpn100 firmware (>= 4.30 < 5.21) • zyxel vpn300 firmware (>= 4.30 < 5.21) • zyxel vpn1000 firmware (>= 4.30 < 5.21) • zyxel nsg300 firmware (>= 1.20 < 1.33) • zyxel nsg300 firmware 1.33