CVE-2023-28767

The configuration parser fails to sanitize user-controlled input in the Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions 5.00 through 5.36,  USG FLEX 50(W) series firmware versions 5.10 through 5.36, USG20(W)-VPN series firmware versions 5.10 through 5.36, and VPN series firmware versions 5.00 through 5.36. An unauthenticated, LAN-based attacker could leverage the vulnerability to inject some operating system (OS) commands into the device configuration data on an affected device when the cloud management mode is enabled.

• zyxel usg 2200-vpn firmware (>= 5.00 < 5.37) • zyxel usg flex 100 firmware (>= 5.00 < 5.37) • zyxel usg flex 100w firmware (>= 5.00 < 5.37) • zyxel usg flex 200 firmware (>= 5.00 < 5.37) • zyxel usg flex 50 firmware (>= 5.00 < 5.37) • zyxel usg flex 500 firmware (>= 5.00 < 5.37) • zyxel usg flex 50w firmware (>= 5.00 < 5.37) • zyxel usg flex 700 firmware (>= 5.00 < 5.37) • zyxel zywall vpn100 firmware (>= 5.00 < 5.37) • zyxel zywall vpn2s firmware (>= 5.00 < 5.37) • zyxel zywall vpn300 firmware (>= 5.00 < 5.37) • zyxel zywall vpn50 firmware (>= 5.00 < 5.37) • zyxel zywall vpn 100 firmware (>= 5.00 < 5.37) • zyxel zywall vpn 300 firmware (>= 5.00 < 5.37) • zyxel zywall vpn 50 firmware (>= 5.00 < 5.37) • zyxel usg 20w-vpn firmware (>= 5.10 < 5.37) • zyxel zywall atp100 firmware (>= 5.10 < 5.37) • zyxel zywall atp100w firmware (>= 5.10 < 5.37) • zyxel zywall atp200 firmware (>= 5.10 < 5.37) • zyxel zywall atp500 firmware (>= 5.10 < 5.37) • zyxel zywall atp700 firmware (>= 5.10 < 5.37) • zyxel zywall atp800 firmware (>= 5.10 < 5.37)