CVE-2026-4960
Stack-Based Buffer Overflow in Tenda AC6 POST Handler
Publication date: 2026-03-27
Last updated on: 2026-03-31
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| tenda | ac6_firmware | 15.03.05.16 |
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-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
| 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 Tenda AC6 router, specifically in the function fromWizardHandle within the /goform/WizardHandle file, which is part of the POST Request Handler component.
An attacker can manipulate the argument WANT/WANS to trigger a stack-based buffer overflow, which is a type of memory corruption that can allow execution of arbitrary code.
The attack can be performed remotely, meaning an attacker does not need physical access to the device to exploit this vulnerability.
How can this vulnerability impact me? :
Exploitation of this vulnerability can lead to severe impacts including unauthorized code execution on the affected device.
Because it is a stack-based buffer overflow, an attacker could potentially take control of the router, disrupt its normal operation, intercept or manipulate network traffic, or use the device as a foothold for further attacks within a network.
The vulnerability has a high severity score (CVSS v3.1 base score of 8.8), indicating a significant risk if exploited.