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CVE-2021-35028

Quick assessment

Affected
Zyxel ZyWALL VPN2S 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 Vpn2S是中国合勤科技（Zyxel）公司的一款可靠安全的Vpn路由器。 Zyxel VPN2S 存在操作系统命令注入漏洞，该漏洞源于Zyxel VPN2S 固件版本 1.12 的 CGI 程序中的命令注入漏洞可能允许经过身份验证的本地用户执行任意操作系统命令。

CVSS 7.3 · High EPSS 0.30% · P22

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-35028

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A command injection vulnerability in the CGI program of the Zyxel VPN2S firmware version 1.12 could allow an authenticated, local user to execute arbitrary OS commands.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/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 Vpn2S 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel Vpn2S是中国合勤科技（Zyxel）公司的一款可靠安全的Vpn路由器。 Zyxel VPN2S 存在操作系统命令注入漏洞，该漏洞源于Zyxel VPN2S 固件版本 1.12 的 CGI 程序中的命令注入漏洞可能允许经过身份验证的本地用户执行任意操作系统命令。
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 ZyWALL VPN2S Firmware 1.12(ABLN.0)C0 -

II. Public POCs for CVE-2021-35028

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III. Intelligence Information for CVE-2021-35028

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Other References for CVE-2021-35028 (1)

IV. Related Vulnerabilities

Same product: ZyWALL VPN2S Firmware
Same vendor: Zyxel
Same weakness: CWE-78

V. Comments for CVE-2021-35028

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