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CVE-2021-4030

Quick assessment

Affected
Zyxel ARMOR Z2 (NBG6817) firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zyxel Nbg6816和Zyxel Nbg6817都是中国合勤科技（Zyxel）公司的产品。Zyxel Nbg6816是一个双频无线千兆路由器。Zyxel Nbg6817是一个无线路由器。 Zyxel Nbg6816和Zyxel Nbg6817 存在跨站请求伪造漏洞，该漏洞源于在HTTP守护进程中对用户提供的数据没有进行足够的杀毒处理。攻击者可利用该漏洞可以欺骗受害者跟踪一个特别制作的链接，并在用户的浏览器中执行任意的HTML和脚本代码，以攻击脆弱的网站。

CVSS 8.0 · High EPSS 0.44% · P37
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I. Basic Information for CVE-2021-4030

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A cross-site request forgery vulnerability in the HTTP daemon of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary commands if they coerce or trick a local user to visit a compromised website with malicious scripts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel Nbg6816和Zyxel Nbg6817 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel Nbg6816和Zyxel Nbg6817都是中国合勤科技（Zyxel）公司的产品。Zyxel Nbg6816是一个双频无线千兆路由器。Zyxel Nbg6817是一个无线路由器。 Zyxel Nbg6816和Zyxel Nbg6817 存在跨站请求伪造漏洞，该漏洞源于在HTTP守护进程中对用户提供的数据没有进行足够的杀毒处理。攻击者可利用该漏洞可以欺骗受害者跟踪一个特别制作的链接，并在用户的浏览器中执行任意的HTML和脚本代码，以攻击脆弱的网站。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zyxel ARMOR Z2 (NBG6817) firmware 1.00(ABCS.10)C0 -
Zyxel ARMOR Z1 (NBG6816) firmware 1.00(AAWB.10)C0 -

II. Public POCs for CVE-2021-4030

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III. Intelligence Information for CVE-2021-4030

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Other References for CVE-2021-4030 (1)

IV. Related Vulnerabilities

Same product: ARMOR Z2 (NBG6817) firmware
Same vendor: Zyxel
Same weakness: CWE-352

V. Comments for CVE-2021-4030

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