CVE-2026-24113
Received Received - Intake
Buffer Overflow in Tenda W20E getMibPrefix Function

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 `nptr`. When this value is passed into the `getMibPrefix` function and concatenated using `sprintf` without proper size validation, 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
2026-06-15
NVD
CVE-2026-24113
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 V4.0br_V15.11.0.6 device. Attackers can exploit it by controlling the value of a variable named `nptr`. When this variable is passed into the `getMibPrefix` function, it is concatenated using the `sprintf` function without proper size validation. This improper handling can lead to a buffer overflow, which means that more data is written to a buffer than it can hold, potentially causing unexpected behavior or allowing an attacker to execute arbitrary code.

Impact Analysis

The buffer overflow vulnerability can allow attackers to execute arbitrary code or cause the device to crash. This can lead to unauthorized access, disruption of service, or compromise of the device's integrity and confidentiality.

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