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CVE-2022-0342

Quick assessment

Affected
Zyxel USG/ZyWALL series firmware
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zyxel USG/ZyWALL是中国合勤科技（Zyxel）公司的一款防火墙。 Zyxel USG/ZyWALL 4.20版本至4.70版本、USG FLEX 4.50版本至5.20版本、ATP 4.32版本至5.20版本、VPN 4.30版本至5.20版本、NSG 1.20版本至1.33 Patch 4版本存在安全漏洞，攻击者利用该漏洞绕过Web身份验证并获得设备的管理访问权限。

CVSS 9.8 · Critical EPSS 95.13% · P100

Public Exploits 1

Nuclei · 1 CVE-2022-0342.yaml [template]

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2022-0342

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel USG/ZyWALL 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel USG/ZyWALL是中国合勤科技（Zyxel）公司的一款防火墙。 Zyxel USG/ZyWALL 4.20版本至4.70版本、USG FLEX 4.50版本至5.20版本、ATP 4.32版本至5.20版本、VPN 4.30版本至5.20版本、NSG 1.20版本至1.33 Patch 4版本存在安全漏洞，攻击者利用该漏洞绕过Web身份验证并获得设备的管理访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Zyxel USG/ZyWALL series firmware 4.20 through 4.70 -
Zyxel USG FLEX series firmware 4.50 through 5.20 -
Zyxel ATP series firmware 4.32 through 5.20 -
Zyxel VPN series firmware 4.30 through 5.20 -
Zyxel NSG series firmware 1.20 through 1.33 Patch 4 -

II. Public POCs for CVE-2022-0342

# POC Description Source Link Shenlong Link
1 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. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-0342.yaml POC Details
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III. Intelligence Information for CVE-2022-0342

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Other References for CVE-2022-0342 (1)

IV. Related Vulnerabilities

Same product: USG/ZyWALL series firmware
Same vendor: Zyxel
Same weakness: CWE-287

V. Comments for CVE-2022-0342

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