CVE-2026-20576
Received Received - Intake

Out of Bounds Write in MediaTek Chipset

Publication date: 2026-11-02

Last updated on: 2026-11-02

Assigner: MediaTek, Inc.

Description
In afe, there is a possible out of bounds write 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: ALPS11431385; Issue ID: MSV-9920.

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Meta Information

Published
2026-11-02
Last Modified
2026-11-02
Generated
2026-11-02
AI Q&A
2026-11-02
EPSS Evaluated
N/A
NVD
CVE-2026-20576

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-191 The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

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Executive Summary

This vulnerability is an out of bounds write issue in a component called 'afe' due to a missing bounds check. It allows local privilege escalation if an attacker already has System privilege access. Exploitation does not require user interaction.

Impact Analysis

If exploited, this vulnerability could allow an attacker with existing System privileges to escalate their access further, potentially gaining control over the affected device. This could lead to unauthorized data access or system manipulation.

Mitigation Strategies

Apply the patch identified as ALPS11431385 to address the missing bounds check in the afe component. Ensure the System privilege is not granted to untrusted actors to prevent potential exploitation.

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