CVE-2023-22916

State: Published
Severity: 8.1 High
Published: Apr 24, 2023
Updated: Feb 12, 2025
Reserved: Jan 10, 2023

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H	Zyxel

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
ATP series firmwareZyxel	5.10 through 5.35Affected
USG FLEX series firmwareZyxel	5.00 through 5.35Affected
USG FLEX 50(W) firmwareZyxel	5.10 through 5.35Affected
USG20(W)-VPN firmwareZyxel	5.10 through 5.35Affected
VPN series firmwareZyxel	5.00 through 5.35Affected

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps

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