Vulnerability Database

317,828

Total vulnerabilities in the database

CVE-2022-45440

A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0, which processes symbolic links on external storage media. A local authenticated attacker with administrator privileges could abuse this vulnerability to access the root file system by creating a symbolic link on external storage media, such as a USB flash drive, and then logging into the FTP server on a vulnerable device.

  • Published: Jan 17, 2023
  • Updated: Nov 16, 2025
  • CVE: CVE-2022-45440
  • Severity: Low
  • Exploit:

CVSS v3:

  • Severity: Low
  • Score: 4.4
  • AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CWEs:

Software From Fixed in
zyxel / ax7501-b0_firmware - 5.17\(abpc.3\)c0