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CVE-2025-13943

Quick assessment

Affected
Zyxel EX3301-T0 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 EX3301-T0是中国合勤（Zyxel）公司的一个安全路由网关。 Zyxel EX3301-T0 5.50(ABVY.7)C0及之前版本存在操作系统命令注入漏洞，该漏洞源于日志文件下载功能存在身份验证后命令注入，可能导致执行操作系统命令。

CVSS 8.8 · High EPSS 1.42% · P72

Possible ATT&CK Techniques 1 AI

T1059.004 · Unix Shell
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I. Basic Information for CVE-2025-13943

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 log file download function of the Zyxel EX3301-T0 firmware versions through 5.50(ABVY.7)C0 could allow an authenticated attacker to execute operating system (OS) commands on an affected device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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 EX3301-T0 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel EX3301-T0是中国合勤（Zyxel）公司的一个安全路由网关。 Zyxel EX3301-T0 5.50(ABVY.7)C0及之前版本存在操作系统命令注入漏洞，该漏洞源于日志文件下载功能存在身份验证后命令注入，可能导致执行操作系统命令。
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 EX3301-T0 firmware <= 5.50(ABVY.7)C0 -

II. Public POCs for CVE-2025-13943

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III. Intelligence Information for CVE-2025-13943

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Same Patch Batch · Zyxel · 2026-02-24 · 7 CVEs total

CVE-2025-13942 9.8 CRITICAL Zyxel EX3510-B0 操作系统命令注入漏洞
CVE-2026-1459 7.2 HIGH Zyxel VMG3625-T50B 操作系统命令注入漏洞
CVE-2025-11846 4.9 MEDIUM Zyxel VMG3625-T50B和Zyxel WX3100-T0 代码问题漏洞
CVE-2025-11845 4.9 MEDIUM Zyxel VMG3625-T50B和Zyxel WX3100-T0 代码问题漏洞
CVE-2025-11847 4.9 MEDIUM Zyxel VMG3625-T50B和Zyxel WX3100-T0 代码问题漏洞
CVE-2025-11848 4.9 MEDIUM Zyxel VMG3625-T50B和Zyxel WX3100-T0 代码问题漏洞

IV. Related Vulnerabilities

Same vendor: Zyxel
Same weakness: CWE-78

V. Comments for CVE-2025-13943

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