CVE-2022-45440

Published: Jan 17, 2023

Modified: Dec 17, 2025

PUBLISHED

CVSS v3.1

4.4

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.

Vendor	Product	Versions
Zyxel	AX7501-B0 firmware	affected `< V5.17(ABPC.3)C0`

Weaknesses (CWE)

CWE-59

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-cleartext-storage-of-wifi-credentials-and-improper-symbolic-links-of-ftp-for-ax7501-b0-cpe

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CVE-2022-45440

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References