CVE-2026-10119
Stack-Based Buffer Overflow in TRENDnet TEW-432BRP
Publication date: 2026-05-30
Last updated on: 2026-05-30
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| trendnet | tew-432brp | 3.10b20 |
Helpful Resources
Exploitability
| 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). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
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.
What immediate steps should I take to mitigate this vulnerability?
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'.