CVE-2026-7606 TRENDnet TEW-821DAP Firmware Update new_gui_update_firmware data authenticity

Medium 6.3 Published 2 May 2026 Updated 4 May 2026

Attackers can bypass firmware authenticity checks to install malicious firmware on end-of-life TRENDnet access points, enabling remote code execution.

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-2026-7606?

CVE-2026-7606 is a medium-severity vulnerability in TRENDnet TEW-821DAP, published on 2 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A weakness has been identified in TRENDnet TEW-821DAP 1.12B01. This issue affects the function find_hwid/new_gui_update_firmware of the component Firmware Update Handler. Executing a manipulation of the argument dest can lead to insufficient verification of data authenticity. The attack can be launched remotely. Attacks of this nature are highly complex. The exploitability is assessed as difficult. The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling". This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-345

Which versions are affected by CVE-2026-7606?

It affects 1 product.

Products include Trendnet Tew-821dap Firmware.

How do I fix CVE-2026-7606?

No fix has been published for CVE-2026-7606 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-7606 being exploited?

There is no known exploitation of CVE-2026-7606 in the wild and no public exploit code.

Sources

Also known as GHSA-qh66-v678-hhq5.