CVE-2025-6129
BaseFortify
Publication date: 2025-06-16
Last updated on: 2025-07-02
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-2025-6129 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/formSaveConfig, where the submit-url parameter is improperly handled. An attacker can send a specially crafted POST request with input that exceeds the buffer size, causing a buffer overflow. This flaw allows remote exploitation without authentication and can lead to denial of service or potentially other impacts on the device. [1, 2]
How can this vulnerability impact me? :
This vulnerability can impact you by compromising the confidentiality, integrity, and availability of the affected TOTOLINK EX1200T device. Exploiting the buffer overflow can cause denial of service (DoS), making the device unavailable. Since the attack can be performed remotely without authentication, it poses a significant security risk to network stability and device operation. [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 for HTTP POST requests to the endpoint /boafrm/formSaveConfig containing unusually large or malformed submit-url parameters that may trigger the buffer overflow. Network intrusion detection systems (NIDS) can be configured to alert on such suspicious POST requests. A simple detection command using curl to test the endpoint could be: curl -X POST -d "submit-url=$(python3 -c 'print("A"*1000)')" http://<target-ip>/boafrm/formSaveConfig -v. Additionally, inspecting logs for crashes or denial of service symptoms on the TOTOLINK EX1200T device may indicate exploitation attempts. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include restricting access to the affected device's management interface from untrusted networks, such as by using firewall rules or network segmentation. Since no official patches or vendor mitigations are available, it is recommended to replace the affected TOTOLINK EX1200T device with an alternative product not vulnerable to this issue. Monitoring for exploit attempts and disabling remote management if possible can also reduce risk. [2]