CVE-2023-22914: zyxel usg_flex_100_firmware Path Traversal

Vulnerability summary

CVE-2023-22914 is a high (CVSS 7.2) Path Traversal vulnerability in zyxel usg_flex_100_firmware. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63.3% of scored vulnerabilities.

Timeline

1. 24-04-2023
   PublishedVulnerability first disclosed.
2. 12-02-2025
   Last modifiedVulnerability information updated.

Description

A path traversal vulnerability in the “account_print.cgi” CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow a remote authenticated attacker with administrator privileges to execute unauthorized OS commands in the “tmp” directory by uploading a crafted file if the hotspot function were enabled.

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.