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CVE-2022-45440

Medium

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.

SeverityMedium
CVSS4.4
Exploit probability—
ProductZyxel Ax7501-b0 Firmware
PublishedJan 17, 2023
First seenJan 17, 2023
Weakness typeCWE-59Improper link resolution

How to fix

Update
  • zyxel ax7501-b0_firmware5.17\(abpc.3\)c0 or later

Affected products

ProductAffected versionsFixed in
zyxel ax7501-b0_firmwarev < 5.17\(abpc.3\)c05.17\(abpc.3\)c0

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