CVE-2026-24115
Buffer Overflow in Tenda W20E QoS Rule Processing
Publication date: 2026-03-02
Last updated on: 2026-03-03
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| tenda | w20e_firmware | 15.11.0.6 |
Helpful Resources
Exploitability
| 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 Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know