CVE-2026-10123
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
How can this vulnerability impact me? :
Exploiting this vulnerability can cause the affected TRENDnet router to crash and stop functioning properly, leading to denial of service.
Since the router becomes unresponsive, network services relying on it may be disrupted, potentially affecting connectivity and security.
Because the exploit is publicly available, attackers could remotely initiate this attack, increasing the risk.
Can you explain this vulnerability to me?
CVE-2026-10123 is a stack-based buffer overflow vulnerability found in the TRENDnet TEW-432BRP router, specifically in the formSetDomainFilter function accessed via /goform/formSetDomainFilter.
The issue arises because user input is copied directly into a local stack variable without proper validation. An attacker can exploit this by sending a specially crafted long string to parameters like blocked_domain_list, which overwrites the function's return address.
This can cause the router to crash and become unresponsive, disrupting its normal operation. The vulnerability can be triggered remotely.
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/formSetDomainFilter endpoint of the TRENDnet TEW-432BRP router. Specifically, sending a long string (such as a series of 'a' characters) to the blocked_domain_list parameter can trigger the buffer overflow and cause the router to crash or become unresponsive.
A detection command example using curl would be:
- curl -X POST http://[router_ip]/goform/formSetDomainFilter -d "blocked_domain_list=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
If the router crashes or becomes unresponsive after this request, it indicates the presence of the vulnerability.
What immediate steps should I take to mitigate this vulnerability?
Since the affected product TRENDnet TEW-432BRP has been end-of-life for 15 years and the vendor does not provide fixes, immediate mitigation steps include:
- Remove or isolate the vulnerable device from the network to prevent remote exploitation.
- Disable remote management or restrict access to the device's management interface to trusted hosts only.
- Consider replacing the device with a supported and updated model to ensure ongoing security.