CVE-2025-7796
BaseFortify
Publication date: 2025-07-18
Last updated on: 2025-07-23
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| tenda | fh451_firmware | 1.0.0.9 |
| tenda | fh451 | * |
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-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
Can you explain this vulnerability to me?
CVE-2025-7796 is a critical stack-based buffer overflow vulnerability in the Tenda FH451 router version 1.0.0.9. It occurs in the function fromPptpUserAdd within the /goform/PPTPDClient file, where improper handling of the Username argument allows an attacker to overwrite the stack buffer. This can be exploited remotely without local access, potentially allowing arbitrary code execution or denial of service on the device. [1, 2]
How can this vulnerability impact me? :
This vulnerability can impact you by allowing a remote attacker to execute arbitrary code or cause a denial of service on the affected Tenda FH451 router. This compromises the confidentiality, integrity, and availability of the device, potentially disrupting network operations or enabling further attacks through the compromised router. [1, 2]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
Detection can focus on monitoring network traffic for requests to the vulnerable endpoint /goform/PPTPDClient with suspicious or unusually long 'Username' parameters that may trigger the stack-based buffer overflow. Since the vulnerability involves the fromPptpUserAdd function processing the 'Username' argument, inspecting HTTP POST requests to this endpoint for abnormal payloads is recommended. Specific commands could include using tools like curl or wget to send crafted requests to test the endpoint, or using network monitoring tools (e.g., tcpdump, Wireshark) to capture and analyze traffic targeting /goform/PPTPDClient. 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 discontinuing use of the affected Tenda FH451 router version 1.0.0.9, as no official patches or fixes are available. Consider replacing the device with an alternative product not affected by this vulnerability. Additionally, restricting remote access to the router's management interface and monitoring for exploit attempts targeting /goform/PPTPDClient can help reduce risk. Since no known mitigations or countermeasures have been identified, limiting exposure and device replacement are the primary recommended actions. [1]