CVE-2023-22916: The configuration parser of Zyxel ATP series firmware versions 5.10 through 5.35, USG FLEX series firmware versions 5.00 through 5.35, USG FLEX 50(W) firmware…

PriorityP345high8.1CVSS 3.1

AVNACLPRNUIRSUCNIHAH

EPSS

0.69%

48.8th percentile

The configuration parser of Zyxel ATP series firmware versions 5.10 through 5.35, USG FLEX series firmware versions 5.00 through 5.35, USG FLEX 50(W) firmware versions 5.10 through 5.35, USG20(W)-VPN firmware versions 5.10 through 5.35, and VPN series firmware versions 5.00 through 5.35, which fails to properly sanitize user input. A remote unauthenticated attacker could leverage the vulnerability to modify device configuration data, resulting in DoS conditions on an affected device if the attacker could trick an authorized administrator to switch the management mode to the cloud mode.

Affected

23 ranges

Vendor	Product	Version range	Fixed in
zyxel	atp100_firmware	5.10 – 5.35	—
zyxel	atp100w_firmware	5.10 – 5.35	—
zyxel	atp200_firmware	5.10 – 5.35	—
zyxel	atp500_firmware	5.10 – 5.35	—
zyxel	atp700_firmware	5.10 – 5.35	—
zyxel	atp800_firmware	5.10 – 5.35	—
zyxel	atp_series_firmware	—	—
zyxel	usg20_vpn_firmware	—	—
zyxel	usg_20w-vpn_firmware	5.10 – 5.35	—
zyxel	usg_flex_100_firmware	5.00 – 5.35	—
zyxel	usg_flex_100w_firmware	5.00 – 5.35	—
zyxel	usg_flex_200_firmware	5.00 – 5.35	—
zyxel	usg_flex_500_firmware	5.00 – 5.35	—
zyxel	usg_flex_50_firmware	—	—
zyxel	usg_flex_50_firmware	5.00 – 5.35	—
zyxel	usg_flex_50w_firmware	5.10 – 5.35	—
zyxel	usg_flex_700_firmware	5.00 – 5.35	—
zyxel	usg_flex_series_firmware	—	—
zyxel	vpn1000_firmware	5.00 – 5.35	—
zyxel	vpn100_firmware	5.00 – 5.35	—
zyxel	vpn300_firmware	5.00 – 5.35	—
zyxel	vpn50_firmware	5.00 – 5.35	—
zyxel	vpn_series_firmware	—	—

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