CVE-2026-20436
Received Received - Intake

Bounds Check Missing in WLAN STA Driver Enables Privilege Escalation

Publication date: 2026-03-02

Last updated on: 2026-03-03

Assigner: MediaTek, Inc.

Description
In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00473802; Issue ID: MSV-5970.

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Meta Information

Published
2026-03-02
Last Modified
2026-03-03
Generated
2026-07-07
AI Q&A
2026-03-02
EPSS Evaluated
2026-07-06
NVD
CVE-2026-20436
EUVD
EUVD-2026-9161

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mediatek nbiot_sdk to 3.8 (inc)

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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.

Attack-Flow Graph

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Executive Summary

This vulnerability exists in the wlan STA driver where a missing bounds check can lead to a possible escalation of privilege.

Specifically, if a malicious actor already has System privilege, they could exploit this flaw to escalate their privileges further.

No user interaction is required to exploit this vulnerability.

Impact Analysis

The impact of this vulnerability is a local escalation of privilege.

If an attacker already has System privilege on the affected system, they could exploit this vulnerability to gain higher privileges or perform unauthorized actions.

Compliance Impact

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Detection Guidance

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