CVE-2022-23970: ASUS Rt-AX56U Firmware

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

ASUS RT-AX56U’s update_json function has a path traversal vulnerability due to insufficient filtering for special characters in the URL parameter. An unauthenticated LAN attacker can overwrite a system file by uploading another file with the same file name, which results in service disruption.

Affected products

• ASUS Rt-AX56U Firmware: version 3.0.0.4.386.45898 only

Published 2022-04-07. Last modified 2026-06-17.