CVE-2026-10122: TRENDnet TEW-432BRP stack overflow in formSetProtocolFilter

CVE-2026-10122 · Severity: high · CVSS 8.8 · Published 2026-05-30

A 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 by sending a specially crafted web request. Because this product reached its end-of-life in 2009, the manufacturer will not be providing a security update, leaving affected devices permanently vulnerable.

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

Quick answers

Is CVE-2026-10122 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-10122 being exploited in the wild.
How severe is CVE-2026-10122?
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-2026-10122?
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-2026-10122 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-10122?
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 vulnerability exists in the 'boa' web server binary of the TRENDnet TEW-432BRP router (version 3.10B20). The flaw is located within the 'formSetProtocolFilter' function in the '/goform/formSetProtocolFilter' endpoint. The 'protocol_name' POST parameter is copied into a local stack variable without adequate bounds checking, allowing an attacker to overwrite the function's return address. Exploitation requires network access and low-level authentication (e.g., default credentials). Successful exploitation can lead to arbitrary code execution or a persistent denial of service (device crash). No patch is available as the device has been end-of-life (EOL) since 2009.

Affected products

  • TRENDnet TEW-432BRP 3.10B20

Timeline

  • 2026-05-30: disclosed: Public disclosure of the vulnerability and PoC.
  • 2026-05-30: advisory: NVD published the CVE record.

References

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