CVE-2022-45440 MEDIUM

CVE-2022-45440

Vendor Zyxel
Product AX7501-B0 firmware
Weakness CWE-59
Published January 17, 2023
Last update December 17, 2025
View on NVD All CVEs

CVSS base score

4.4/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 17, 2023 CVE published
December 17, 2025 Record updated