CVE-2026-4904
Stack-Based Buffer Overflow in Tenda AC5 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 | ac5_firmware | 15.03.06.47 |
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 AC5 router, specifically in the function formSetCfm within the /goform/setcfm file, which handles POST requests.
An attacker can manipulate the argument funcpara1 to cause a stack-based buffer overflow.
This overflow can be exploited remotely, meaning an attacker does not need physical access to the device to launch an attack.
The exploit for this vulnerability has been publicly disclosed.
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.
Since the attack can be launched remotely, it poses a significant security risk, potentially allowing unauthorized access or control over the router.
This could result in disruption of network services, interception or manipulation of network traffic, or further compromise of connected devices.