CVE-2026-24109
Received Received - Intake
Buffer Overflow in Tenda W20E via Unvalidated picName Input

Publication date: 2026-03-02

Last updated on: 2026-03-05

Assigner: MITRE

Description
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `picName`. When this value is used in `sprintf` without validating variable sizes, it could lead to a buffer overflow vulnerability.
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Meta Information
Published
2026-03-02
Last Modified
2026-03-05
Generated
2026-06-16
AI Q&A
2026-03-02
EPSS Evaluated
2026-06-14
NVD
CVE-2026-24109
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
tenda w20e_firmware 15.11.0.6
Helpful Resources
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 running version 4.0br_V15.11.0.6. It occurs because an attacker can control the value of a variable named `picName`. This value is then used in a function called `sprintf` without proper validation of the variable's size. As a result, this can cause a buffer overflow, which means more data is written to a buffer than it can hold, potentially leading to unexpected behavior or exploitation.

Impact Analysis

The buffer overflow vulnerability can allow attackers to execute arbitrary code, crash the device, or cause it to behave unpredictably. This could lead to unauthorized access, denial of service, or compromise of the device's functionality.

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