CVE-2025-6336
BaseFortify
Publication date: 2025-06-20
Last updated on: 2025-06-26
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| totolink | ex1200t_firmware | 4.1.2cu.5232_b20210713 |
| totolink | ex1200t | * |
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?
CVE-2025-6336 is a critical buffer overflow vulnerability in the TOTOLINK EX1200T router firmware version 4.1.2cu.5232_B20210713. It occurs in the HTTP POST request handler at the endpoint /boafrm/formTmultiAP, specifically when manipulating the 'submit-url' parameter. The vulnerability arises because the device copies input data into a buffer without checking if the input size exceeds the buffer size, leading to a buffer overflow. This flaw can be exploited remotely by sending a specially crafted HTTP POST request, potentially allowing attackers to compromise the device. [1, 2]
How can this vulnerability impact me? :
This vulnerability can impact you by allowing remote attackers to exploit the buffer overflow to compromise the confidentiality, integrity, and availability of the affected device. Possible impacts include denial of service (DoS), unauthorized code execution, or other malicious activities that disrupt device operation or allow control over the device. Since the exploit is publicly available and easy to execute remotely, affected devices are at significant risk. [1, 2]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by monitoring HTTP POST requests to the endpoint /boafrm/formTmultiAP on the TOTOLINK EX1200T router. Specifically, look for suspicious or unusually large 'submit-url' parameter values in POST requests that could indicate an attempt to exploit the buffer overflow. Network intrusion detection systems (NIDS) or web application firewalls (WAF) can be configured to alert on such patterns. As for commands, you can use tools like curl or wget to test the endpoint manually, for example: curl -X POST -d "submit-url=<large_payload>" http://<router_ip>/boafrm/formTmultiAP. Additionally, network traffic capture tools like tcpdump or Wireshark can be used to capture and analyze POST requests to this endpoint. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include restricting or blocking remote HTTP POST requests to the /boafrm/formTmultiAP endpoint on the TOTOLINK EX1200T router, if possible. Since no known countermeasures or patches are available, it is recommended to replace the affected device with an alternative product. Additionally, limit network exposure of the device by placing it behind a firewall or VPN, and monitor for any suspicious activity targeting this vulnerability. [1]