Tenda W30E V2 Incorrect Authorization Allows Administrator Password Change

Advisories

severity: high
date: January 26, 2026
Affecting: W30E V2 firmware <= v16.01.0.19(5037)
CVE: CVE-2026-24428
CWE: CWE-863 Incorrect Authorization
CVSS: 8.7
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: Tenda Product Webpage
Credit: Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc.
Description: Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) contain an authorization flaw in the user management API that allows a low-privileged authenticated user to change the administrator account password. By sending a crafted request directly to the backend endpoint, an attacker can bypass role-based restrictions enforced by the web interface and obtain full administrative privileges.