Security Advisory

CVE-2022-45440

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-01-17 00:00:00

Last updated 2025-12-17 08:33:35

Assigner Zyxel

State PUBLISHED

Description

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.

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