CVE-2026-4961
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-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). |
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Tenda AC6 router firmware version 15.03.05.16, specifically in the function formQuickIndex within the /goform/QuickIndex file, which handles POST requests.
The issue arises from improper handling of the PPPOEPassword argument, which can be manipulated to cause a stack-based buffer overflow.
This buffer overflow can be exploited remotely, meaning an attacker does not need physical access to the device to carry out the attack.
The exploit code for this vulnerability is publicly available.
How can this vulnerability impact me? :
Exploitation of this vulnerability can lead to severe consequences due to the stack-based buffer overflow.
An attacker could potentially execute arbitrary code on the affected device remotely, leading to unauthorized control.
This could result in disruption of network services, interception or manipulation of network traffic, or using the device as a foothold for further attacks within the network.