CVE-2026-9426
Stack-Based Buffer Overflow in Edimax EW-7438RPn Router
Publication date: 2026-05-25
Last updated on: 2026-05-25
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| edimax | ew-7438rpn | 1.31 |
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?
This vulnerability exists in the Edimax EW-7438RPn device, specifically in the function formHwSet within the file /goform/formHwSet. It is caused by improper handling of several arguments (Anntena, Mcs, regDomain, nic0Addr, nic1Addr, wlanAddr, wanAddr, wlanSSID, wlanChan, initgain, txcck, txofdm, submit-url), which leads to a stack-based buffer overflow.
The vulnerability can be exploited remotely, meaning an attacker does not need physical access to the device to carry out the attack. The exploit code is publicly available, increasing the risk of exploitation.
The vendor was informed early about this issue but did not respond.
How can this vulnerability impact me? :
Exploitation of this vulnerability can lead to a stack-based buffer overflow, which may allow an attacker to execute arbitrary code on the affected device.
Because the attack can be performed remotely, it poses a significant security risk, potentially allowing unauthorized access, control over the device, or disruption of its normal operation.
The high CVSS scores (up to 9.0 in version 2.0) indicate a severe impact on confidentiality, integrity, and availability.