CVE-2026-7717
Buffer Overflow in Totolink WA300 Firmware via File Upload
Publication date: 2026-05-04
Last updated on: 2026-05-04
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| totolink | wa300 | 5.2cu.7112_b20190227 |
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-120 | The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Totolink WA300 device, specifically in the UploadCustomModule function within the /cgi-bin/cstecgi.cgi file's POST Request Handler component.
An attacker can manipulate the argument 'File' in a way that causes a buffer overflow, which is a condition where more data is written to a buffer than it can hold.
This buffer overflow can be exploited remotely, meaning an attacker does not need physical access to the device to launch the attack.
The exploit for this vulnerability has been publicly disclosed and may be used by attackers.
How can this vulnerability impact me? :
Exploiting this vulnerability can lead to a buffer overflow, which may allow an attacker to execute arbitrary code or cause the device to crash.
Since the attack can be launched remotely, it increases the risk of unauthorized access or control over the affected device.
The impact includes potential compromise of device integrity, confidentiality, and availability.