CVE-2026-24114
Received Received - Intake

Buffer Overflow in Tenda W20E Due to pPortMapIndex Validation Failure

Publication date: 2026-03-02

Last updated on: 2026-03-03

Assigner: MITRE

Description
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Failure to validate `pPortMapIndex` may lead to buffer overflows when using `strcpy`.

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Meta Information

Published
2026-03-02
Last Modified
2026-03-03
Generated
2026-07-06
AI Q&A
2026-03-02
EPSS Evaluated
2026-07-05
NVD
CVE-2026-24114

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
tenda w20e_firmware 15.11.0.6

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Exploitability

CWE
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KEV
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CWE ID Description
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.

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Executive Summary

This vulnerability exists in the Tenda W20E device, specifically version V4.0br_V15.11.0.6. It is caused by a failure to properly validate the parameter `pPortMapIndex` before using it in the `strcpy` function. Because `strcpy` does not check the length of the input, this can lead to a buffer overflow.

Impact Analysis

The buffer overflow caused by improper validation of `pPortMapIndex` can potentially allow an attacker to overwrite memory, which may lead to unexpected behavior such as crashes, denial of service, or even execution of arbitrary code on the affected device.

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