CVE-2025-6402
BaseFortify
Publication date: 2025-06-21
Last updated on: 2025-06-25
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| totolink | x15_firmware | 1.0.0-b20230714.1105 |
| totolink | x15 | * |
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-2025-6402 is a critical buffer overflow vulnerability in the TOTOLINK X15 router (version 1.0.0-B20230714.1105). It occurs in the HTTP POST request handler for the endpoint /boafrm/formIpv6Setup, specifically involving the submit-url parameter. The vulnerability arises because the router copies input data to an output 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 crafted HTTP POST request, potentially causing denial of service or other impacts. [1, 2]
How can this vulnerability impact me? :
This vulnerability can impact you by allowing a remote attacker to exploit the buffer overflow to cause denial of service (DoS) on the affected TOTOLINK X15 router, disrupting network availability. It also affects the confidentiality, integrity, and availability of the device, potentially allowing attackers to compromise the router's operation. Exploitation is easy due to publicly available proof-of-concept code, and no known mitigations currently exist. [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 sent to the endpoint /boafrm/formIpv6Setup, specifically looking for suspicious or unusually large payloads in the submit-url parameter that could trigger a buffer overflow. Network intrusion detection systems (NIDS) or web application firewalls (WAF) can be configured to alert on such requests. Additionally, manual detection can involve using tools like curl or wget to send crafted POST requests to the endpoint to test for abnormal behavior or crashes. Example command to test the endpoint: curl -X POST http://<router-ip>/boafrm/formIpv6Setup -d "submit-url=<large_payload>". However, no specific detection commands or signatures are provided in the resources. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include replacing the affected TOTOLINK X15 router version 1.0.0-B20230714.1105 with an alternative device, as no known countermeasures or patches currently exist. Limiting or blocking remote HTTP POST requests to the /boafrm/formIpv6Setup endpoint via network firewall rules or access control lists can reduce exposure. Monitoring for exploit attempts and disabling IPv6 setup features if possible may also help reduce risk until a fix is available. [2]