CVE-2026-10183
Deferred Deferred - Pending Action
Stack-Based Buffer Overflow in TRENDnet TEW-432BRP

Publication date: 2026-05-31

Last updated on: 2026-05-31

Assigner: VulDB

Description
A vulnerability was identified in TRENDnet TEW-432BRP 3.10B20. This affects the function formWlanSetup of the file /goform/formWlanSetup. The manipulation of the argument enrollee leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit is publicly available and might 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
2026-05-31
Last Modified
2026-05-31
Generated
2026-06-20
AI Q&A
2026-05-31
EPSS Evaluated
2026-06-19
NVD
CVE-2026-10183
EUVD
EUVD-2026-33505
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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Executive Summary

CVE-2026-10183 is a stack-based buffer overflow vulnerability found in the TRENDnet TEW-432BRP router, specifically in the formWlanSetup function accessed via the /goform/formWlanSetup endpoint.

The vulnerability occurs because the 'enrollee' parameter in an HTTP POST request is copied into a local stack variable without proper input validation or length checks.

An attacker can send a specially crafted long string to this parameter, which overwrites the function's return address on the stack, causing the router to crash and become unresponsive.

This exploit can be initiated remotely and a proof-of-concept is publicly available.

The product has been end-of-life for 15 years, and the vendor does not provide fixes or support for this vulnerability.

Impact Analysis

This vulnerability can cause the affected TRENDnet router to crash and become unresponsive, leading to denial of service.

As the router fails to provide services after exploitation, network connectivity and availability may be disrupted.

Since the exploit can be triggered remotely, attackers can cause service outages without physical access.

Because the product is no longer supported, there is no official fix, increasing the risk of prolonged exposure.

Detection Guidance

This vulnerability can be detected by sending a specially crafted HTTP POST request to the endpoint /goform/formWlanSetup with the 'enrollee' parameter containing a long string of characters. If the device crashes or becomes unresponsive after this request, it indicates the presence of the vulnerability.

A simple detection command using curl could be:

  • curl -X POST http://[router_ip]/goform/formWlanSetup -d "enrollee=$(python3 -c 'print("a"*1000)')"

If the router crashes or stops responding to requests after this command, it is vulnerable to the stack-based buffer overflow.

Mitigation Strategies

Since the affected product TRENDnet TEW-432BRP has been end-of-life for 15 years and the vendor does not provide fixes or patches, 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.
  • Disable remote management features if enabled, to reduce exposure.
  • Monitor network traffic for suspicious POST requests to /goform/formWlanSetup with unusually long 'enrollee' parameters.
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