CVE-2026-10119
Deferred Deferred - Pending Action
Stack-Based Buffer Overflow in TRENDnet TEW-432BRP

Publication date: 2026-05-30

Last updated on: 2026-06-01

Assigner: VulDB

Description
A security vulnerability has been detected in TRENDnet TEW-432BRP 3.10B20. Impacted is the function formSetMACFilter of the file /goform/formSetMACFilter. The manipulation of the argument filter_name leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor explains: "This product has been EOL for 15 years (since 2009). As the item has been EOL for such a long time, we are not able to replicate or fix any vulnerabilities." This vulnerability only affects products that are no longer supported by the maintainer.
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Meta Information
Published
2026-05-30
Last Modified
2026-06-01
Generated
2026-06-19
AI Q&A
2026-05-30
EPSS Evaluated
2026-06-18
NVD
CVE-2026-10119
EUVD
EUVD-2026-33461
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
trendnet tew-432brp 3.10b20
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
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Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

Executive Summary

CVE-2026-10119 is a security vulnerability in the TRENDnet TEW-432BRP router, specifically in the function formSetMACFilter located at /goform/formSetMACFilter. The vulnerability arises from a stack-based buffer overflow caused by improper input validation of the 'filter_name' parameter.

An attacker can send a specially crafted POST request with a long string to the 'filter_name' parameter, which is copied to a local stack variable without proper length checks. This allows overwriting the function's return address, leading to a crash of the router and making it unresponsive.

The vulnerability is remotely exploitable and has been publicly disclosed. However, the product has been end-of-life (EOL) since 2009, and the vendor does not provide fixes or support for this issue.

Impact Analysis

This vulnerability can cause the affected TRENDnet router to crash and become permanently unresponsive when exploited, resulting in a denial of service.

Since the router stops functioning, network services relying on it will be disrupted, potentially causing loss of connectivity and impacting any systems or users dependent on the device.

Because the device is no longer supported or patched, the risk remains if the device is still in use, and attackers can exploit this vulnerability remotely without user interaction.

Detection Guidance

This vulnerability can be detected by sending a specially crafted POST request to the '/goform/formSetMACFilter' endpoint with a long string in the 'filter_name' parameter. If the device crashes or becomes unresponsive, it indicates the presence of the vulnerability.

A detection command example using curl would be to send a payload with a long string of characters to test for the buffer overflow:

  • curl -X POST http://[router_ip]/goform/formSetMACFilter -d "filter_name=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"

If the router crashes or stops responding after this request, it is vulnerable.

Mitigation Strategies

Since the affected TRENDnet TEW-432BRP device has been end-of-life for 15 years and the vendor does not provide patches or fixes, immediate mitigation steps include:

  • Discontinue use of the vulnerable device and replace it with a supported and updated router model.
  • Isolate the vulnerable device from untrusted networks to prevent remote exploitation.
  • Restrict access to the device's management interface to trusted hosts only.
  • Monitor network traffic for suspicious POST requests targeting '/goform/formSetMACFilter'.
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