CVE-2026-4906
Remote 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-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 AC5 router, specifically in the decodePwd function within the /goform/WizardHandle file of the POST Request Handler component.
By manipulating the argument WANT/WANS, an attacker can trigger a stack-based buffer overflow.
This overflow can be exploited remotely, meaning an attacker does not need physical access to the device to carry out the attack.
The exploit for this vulnerability has been publicly disclosed, increasing the risk of it being used maliciously.
How can this vulnerability impact me? :
Exploiting 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 or control over the router.
This could result in disruption of network services, interception or manipulation of network traffic, or use of the device as a foothold for further attacks.