CVE-2026-4551
Remote Stack-Based Buffer Overflow in Tenda F453 Parameters Handler
Publication date: 2026-03-22
Last updated on: 2026-04-02
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| tenda | f453_firmware | 1.0.0.3 |
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
How can this vulnerability be detected on my network or system? Can you suggest some commands?
[{'type': 'paragraph', 'content': 'This vulnerability can be detected by monitoring for suspicious HTTP POST requests sent to the endpoint /goform/SafeClientFilter with specific parameters.'}, {'type': 'paragraph', 'content': 'Specifically, detection involves checking for POST requests where the "menufacturer" parameter is set to "tenda" and the "Go" parameter contains an unusually long string that could trigger the buffer overflow.'}, {'type': 'paragraph', 'content': 'A practical detection method is to use network traffic inspection tools or command-line utilities like curl or tcpdump to capture and analyze such requests.'}, {'type': 'list_item', 'content': 'Use curl to simulate or detect suspicious requests: curl -X POST http://<target-ip>/goform/SafeClientFilter -d "menufacturer=tenda&Go=<long_string>"'}, {'type': 'list_item', 'content': 'Use tcpdump or Wireshark to filter HTTP POST requests to /goform/SafeClientFilter and inspect parameters for suspicious payloads.'}] [1]
Can you explain this vulnerability to me?
[{'type': 'paragraph', 'content': 'CVE-2026-4551 is a stack-based buffer overflow vulnerability found in the Tenda F453 router firmware version 1.0.0.3. It occurs in the function fromSafeClientFilter within the HTTP daemon component when processing HTTP POST requests to the /goform/SafeClientFilter endpoint.'}, {'type': 'paragraph', 'content': 'The vulnerability is triggered by sending a specially crafted POST request with the "menufacturer" parameter set to "tenda" and an excessively long string in the "Go" parameter. The function concatenates these parameters into a stack buffer without proper bounds checking, causing the buffer to overflow.'}, {'type': 'paragraph', 'content': 'This overflow can lead to denial of service (DoS) or remote code execution (RCE) on the affected device.'}] [1]
How can this vulnerability impact me? :
Exploitation of this vulnerability can allow an attacker to remotely execute arbitrary code or cause a denial of service on the affected Tenda F453 router.
This means an attacker could potentially take control of the device, disrupt network connectivity, or use the compromised router as a foothold for further attacks within the network.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include restricting access to the vulnerable endpoint /goform/SafeClientFilter to trusted networks or IP addresses.
Additionally, applying any available firmware updates from Tenda that address this vulnerability is critical.
If an update is not yet available, consider disabling the affected service or implementing firewall rules to block malicious POST requests targeting the vulnerable parameters.
Monitoring network traffic for exploit attempts and responding quickly to any detected attacks can also help mitigate risk.