Is CVE-2026-10121 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-10121 being exploited in the wild.

How severe is CVE-2026-10121?

High severity, with a CVSS score of 8.8, published 30 May 2026.

Is there a fix for CVE-2026-10121?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-10121 attacked?

It is attacked over the network, in device firmware.

Am I affected by CVE-2026-10121?

Check whether you run TRENDnet TEW-432BRP at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-10121: TRENDnet TEW-432BRP stack overflow in formSetUrlFilter

CVE-2026-10121 · Severity: high · CVSS 8.8 · Published 2026-05-30

A security vulnerability exists in the TRENDnet TEW-432BRP wireless router, a device used to provide internet connectivity for home and small office environments. An attacker can exploit this flaw to crash the router or potentially take full control of the device, leading to a complete loss of internet service and potential unauthorized access to the network. Because this product reached its end-of-life in 2009, the manufacturer will not be providing a security update, and users are advised to replace the hardware.

Technologies: TRENDnet TEW-432BRP. Vendors: TRENDnet.

Quick answers

Is CVE-2026-10121 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-10121 being exploited in the wild.
How severe is CVE-2026-10121?: High severity, with a CVSS score of 8.8, published 30 May 2026.
Which products and versions are affected?: TRENDnet TEW-432BRP 3.10B20.
Is there a fix for CVE-2026-10121?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-10121 attacked?: It is attacked over the network, in device firmware.
Am I affected by CVE-2026-10121?: Check whether you run TRENDnet TEW-432BRP at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow exists in the 'boa' binary of the TRENDnet TEW-432BRP router firmware version 3.10B20. The vulnerability is located within the 'formSetUrlFilter' function in the '/goform/formSetUrlFilter' component. The function fails to validate the length of the 'keyword_list' and 'keyword' parameters before copying them into a fixed-size stack buffer. A remote attacker with low privileges (authenticated access to the web interface) can exploit this by sending a specially crafted POST request, overwriting the return address to achieve arbitrary code execution or causing a device crash (DoS). No patch is available as the device is end-of-life (EOL).

Affected products

TRENDnet TEW-432BRP 3.10B20

Timeline

2026-05-30: advisory: CVE-2026-10121 published by VulDB/NVD
2009: other: Product reached End-of-Life (EOL) status

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.