CVE-2026-24111
Buffer Overflow in Tenda W20E addAuthUser Function
Publication date: 2026-03-02
Last updated on: 2026-03-05
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, specifically version 4.0br_V15.11.0.6. It occurs when an attacker specifies a value for the parameter `userInfo` that is passed into the `addAuthUser` function. The function processes this input using the `sscanf` function without validating the size of the input. This lack of size validation can lead to a buffer overflow condition.
How can this vulnerability impact me? :
The buffer overflow caused by this vulnerability can potentially allow attackers to execute arbitrary code or cause a denial of service on the affected device. This could lead to unauthorized access, disruption of network services, or compromise of the device's integrity.
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?
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