CVE-2025-7805
BaseFortify
Publication date: 2025-07-18
Last updated on: 2025-07-23
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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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-2025-7805 is a critical stack-based buffer overflow vulnerability in the Tenda FH451 router version 1.0.0.9. It occurs in the function fromPptpUserSetting when processing the 'delno' parameter. Improper handling of this parameter allows an attacker to overflow the stack buffer, potentially enabling remote code execution or causing a denial of service. The vulnerability can be exploited remotely without local access, and a proof-of-concept exploit is publicly available. [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 suspicious or crafted HTTP requests targeting the /goform/PPTPUserSetting endpoint with manipulated 'delno' parameters. Since the exploit is publicly available and targets this specific endpoint, network intrusion detection systems (NIDS) or web application firewalls (WAF) can be configured to alert on unusual POST requests to /goform/PPTPUserSetting containing unusually long or malformed 'delno' parameters. Specific commands depend on your environment, but for example, using curl to test the endpoint with crafted input can help verify vulnerability: curl -X POST http://<router-ip>/goform/PPTPUserSetting -d "delno=<crafted_payload>". Additionally, network traffic capture tools like tcpdump or Wireshark can be used to inspect traffic for such requests. [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include replacing the affected Tenda FH451 router running firmware version 1.0.0.9 with an alternative device, as no official vendor patch or mitigation is currently available. Additionally, restricting remote access to the router's management interface, disabling PPTP user settings if not needed, and implementing network-level protections such as firewalls or intrusion prevention systems to block malicious requests targeting /goform/PPTPUserSetting can reduce risk. Monitoring for exploit attempts and isolating vulnerable devices from untrusted networks are also recommended. [2]
How can this vulnerability impact me? :
This vulnerability can impact you by compromising the confidentiality, integrity, and availability of the affected router device. An attacker can remotely exploit the flaw to execute arbitrary code or cause the device to crash (denial of service). Since the exploit is easy to perform and publicly available, it poses a significant security risk to any network relying on the vulnerable router firmware. [1, 2]