Home/CVE/A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12 could allow a remote atta
CVE

CVE-2021-35027

A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12 could allow a remote atta

A directory traversal vulnerability in the web server of the Zyxel VPN2S firmware version 1.12 could allow a remote attacker to gain access to sensitive information.

HIGH · CVSS 7.5 EPSS 0.00437
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-27Path Traversal: 'dir/../../filename'
▤

Affected Products & Versions

1
zyxel zywall vpn2s firmwareall versions
▣

Scoring & Timeline

7.5
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:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
🔗

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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