CVE-2026-4254
Stack-Based Buffer Overflow in Tenda AC8 HTTP Endpoint
Publication date: 2026-03-16
Last updated on: 2026-03-20
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| tenda | ac8_firmware | to 16.03.50.11 (inc) |
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
What immediate steps should I take to mitigate this vulnerability?
I don't know
Can you explain this vulnerability to me?
This vulnerability exists in the Tenda AC8 router firmware up to version 16.03.50.11. It affects the function doSystemCmd within the /goform/SysToolChangePwd HTTP endpoint component. The issue is caused by improper handling of the argument local_2c, which leads to a stack-based buffer overflow. This flaw can be exploited remotely, allowing an attacker to execute arbitrary code or cause a denial of service.
How can this vulnerability impact me? :
The vulnerability can be exploited remotely without any authentication, making it highly dangerous. Successful exploitation could allow an attacker to execute arbitrary code on the affected device, potentially taking full control of the router. This could lead to network compromise, interception or manipulation of network traffic, disruption of internet connectivity, or use of the device as part of a botnet.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know