CVE-2026-24115
Received Received - Intake

Buffer Overflow in Tenda W20E QoS Rule Processing

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 the sizes of `gstup` and `gstdwn` before concatenating them into `gstruleQos` may lead to buffer overflow.

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-24115

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
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.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability exists in the Tenda W20E device running version 4.0br_V15.11.0.6. It occurs because the software does not properly check the sizes of two variables, `gstup` and `gstdwn`, before combining them into another variable called `gstruleQos`. This improper validation can cause a buffer overflow, which means more data is written to a buffer than it can hold.

Impact Analysis

The buffer overflow caused by this vulnerability can potentially allow an attacker to execute arbitrary code, crash the device, or cause it to behave unpredictably. This can lead to denial of service or unauthorized control over the affected device.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

I don't know

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-24115. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart