CVE-2026-24436 Tenda W30E V2 Lacks Rate Limiting on Authentication

Critical 9.2 Published 26 Jan 2026 Updated 14 May 2026

Attackers can brute-force administrative credentials on Tenda W30E V2 routers due to missing rate limiting, leading to potential account takeover.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-24436?

CVE-2026-24436 is a critical missing authorization vulnerability in Tenda W30e Firmware, published on 26 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) do not enforce rate limiting or account lockout mechanisms on authentication endpoints. This allows attackers to perform unrestricted brute-force attempts against administrative credentials.

Weakness: CWE-307

Which versions are affected by CVE-2026-24436?

It affects 1 product.

Products include Tenda W30e Firmware.

How do I fix CVE-2026-24436?

No fix has been published for CVE-2026-24436 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-24436 being exploited?

There is no known exploitation of CVE-2026-24436 in the wild and no public exploit code.

All Tenda W30e Firmware vulnerabilities

Sources

Also known as GHSA-j73p-m2g8-wpgm.