Home/CVE/A command injection vulnerability in the CGI program of the Zyxel VPN2S firmware version 1.12 could allow an authenticat
CVE

CVE-2021-35028

A command injection vulnerability in the CGI program of the Zyxel VPN2S firmware version 1.12 could allow an authenticat

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.

HIGH · CVSS 7.3 EPSS 0.00124
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
▤

Affected Products & Versions

1
zyxel zywall vpn2s firmwareall versions
▣

Scoring & Timeline

7.3
HIGH · CVSS v3.1 · security@zyxel.com.tw
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Sep 2021 · 11:15 AM
CVSS VectorCVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.zyxel.com/support/Zyxel_security_advisory_for_directory_traversal_and_command_injection_vulnerabilities_of_VPN2S_Firewall.shtmlPatchVendor Advisory
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