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CVE-2025-11730

Quick assessment

Affected
Zyxel ATP series 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 USG FLEX等都是中国合勤（Zyxel）公司的产品。Zyxel USG FLEX是一款防火墙。Zyxel ATP是一款防火墙。Zyxel USG FLEX 50(W)/ USG20(W)-VPN是一系列防火墙。 Zyxel多款产品存在操作系统命令注入漏洞，该漏洞源于DDNS配置CLI命令存在身份验证后命令注入，可能导致执行操作系统命令。以下产品及版本受到影响：ATP系列固件 V5.35版本至V5.41版本、USG FLEX系列固件 V5.35版本至V5.41版本、USG FLEX 50(W

CVSS 7.2 · High EPSS 1.44% · P72
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I. Basic Information for CVE-2025-11730

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A post‑authentication command injection vulnerability in the Dynamic DNS (DDNS) configuration CLI command in Zyxel ATP series firmware versions from V5.35 through V5.41, USG FLEX series firmware versions from V5.35 through V5.41, USG FLEX 50(W) series firmware versions from V5.35 through V5.41, and USG20(W)-VPN series firmware versions from V5.35 through V5.41 could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on an affected device by supplying a specially crafted string as an argument to the CLI command.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel多款产品 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel USG FLEX等都是中国合勤（Zyxel）公司的产品。Zyxel USG FLEX是一款防火墙。Zyxel ATP是一款防火墙。Zyxel USG FLEX 50(W)/ USG20(W)-VPN是一系列防火墙。 Zyxel多款产品存在操作系统命令注入漏洞，该漏洞源于DDNS配置CLI命令存在身份验证后命令注入，可能导致执行操作系统命令。以下产品及版本受到影响：ATP系列固件 V5.35版本至V5.41版本、USG FLEX系列固件 V5.35版本至V5.41版本、USG FLEX 50(W
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 ATP series firmware versions from V5.35 through V5.41 -
Zyxel USG FLEX series firmware versions from V5.35 through V5.41 -
Zyxel USG FLEX 50(W) series firmware versions from V5.35 through V5.41 -
Zyxel USG20(W)-VPN series firmware versions from V5.35 through V5.41 -

II. Public POCs for CVE-2025-11730

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III. Intelligence Information for CVE-2025-11730

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IV. Related Vulnerabilities

Same product: ATP series firmware
Same vendor: Zyxel
Same weakness: CWE-78

V. Comments for CVE-2025-11730

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