CVE-2022-0342

State: Published
Severity: 9.8 Critical
Published: Mar 28, 2022
Updated: Aug 2, 2024
Reserved: Jan 24, 2022

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Zyxel

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
USG/ZyWALL series firmwareZyxel	4.20 through 4.70Affected
USG FLEX series firmwareZyxel	4.50 through 5.20Affected
ATP series firmwareZyxel	4.32 through 5.20Affected
VPN series firmwareZyxel	4.30 through 5.20Affected
NSG series firmwareZyxel	1.20 through 1.33 Patch 4Affected

References

https://www.zyxel.com/support/Zyxel-security-advisory-for-authentication-bypass-vulnerability-of-firewalls.shtml

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.