CVE-2026-3169
Buffer Overflow in Tenda F453 httpd Enables Remote Exploitation
Publication date: 2026-02-25
Last updated on: 2026-02-25
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-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?
[{'type': 'paragraph', 'content': 'CVE-2026-3169 is a critical buffer overflow vulnerability found in the Tenda F453 router, version 1.0.0.3. It exists in the function fromSafeEmailFilter within the httpd component, specifically in the /goform/SafeEmailFilter endpoint. The vulnerability occurs because the argument "page" is improperly handled, where input data is copied to an output buffer without verifying that the input size is smaller than the output buffer size. This leads to a classic buffer overflow (CWE-120).'}, {'type': 'paragraph', 'content': 'The flaw allows remote exploitation without authentication, meaning an attacker can trigger the overflow remotely by manipulating the "page" argument.'}] [2, 3]
How can this vulnerability impact me? :
This vulnerability can be exploited remotely to compromise the affected device. It impacts the confidentiality, integrity, and availability of the Tenda F453 router.
- Confidentiality: An attacker may gain unauthorized access to sensitive information.
- Integrity: The attacker could manipulate or corrupt data processed by the device.
- Availability: The device could be crashed or rendered unusable due to the buffer overflow.
The exploit is publicly available and considered easy to execute, increasing the risk of attacks.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
[{'type': 'paragraph', 'content': "The vulnerability exists in the Tenda F453 router firmware version 1.0.0.3, specifically in the /goform/SafeEmailFilter endpoint where the 'page' argument is improperly handled leading to a buffer overflow."}, {'type': 'paragraph', 'content': "Detection could involve monitoring HTTP requests to the /goform/SafeEmailFilter endpoint for unusual or oversized 'page' parameter values that might trigger the buffer overflow."}, {'type': 'paragraph', 'content': 'Since a proof-of-concept exploit is publicly available on GitHub, analyzing network traffic for exploit attempts targeting this endpoint is recommended.'}, {'type': 'paragraph', 'content': 'However, no specific detection commands or tools are provided in the available resources.'}] [2, 3, 1]
What immediate steps should I take to mitigate this vulnerability?
No known mitigations or countermeasures have been identified for this vulnerability.
The recommended immediate step is to replace the affected Tenda F453 device with an alternative product that is not vulnerable.