CVE-2026-3169
Received Received - Intake
Buffer Overflow in Tenda F453 httpd Enables Remote Exploitation

Publication date: 2026-02-25

Last updated on: 2026-02-25

Assigner: VulDB

Description
A security vulnerability has been detected in Tenda F453 1.0.0.3. This impacts the function fromSafeEmailFilter of the file /goform/SafeEmailFilter of the component httpd. The manipulation of the argument page leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.
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Meta Information
Published
2026-02-25
Last Modified
2026-02-25
Generated
2026-06-16
AI Q&A
2026-02-25
EPSS Evaluated
2026-06-14
NVD
CVE-2026-3169
EUVD
EUVD-2026-8627
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
tenda f453_firmware 1.0.0.3
Helpful Resources
Exploitability
CWE
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KEV
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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
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Executive Summary

[{'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]

Impact Analysis

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.

Compliance Impact

I don't know

Detection Guidance

[{'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]

Mitigation Strategies

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.

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