---
id: CVE-2026-20521
title: >-
  In Video HAL, there is a possible escalation of privilege due to a missing
  bounds check
summary: >-
  In Video HAL, there is a possible escalation of privilege due to a missing
  bounds check. This could lead to local escalation of privilege with no
  additional execution privileges needed. User interaction is not needed for
  exploitation. Pa…
severity: none
cwe:
  - CWE-121
vendor: 'MediaTek, Inc.'
product: MediaTek chipset
affected:
  - mediatek_chipset MT2718
  - mediatek_chipset MT6768
  - mediatek_chipset MT6769
  - mediatek_chipset MT6781
  - mediatek_chipset MT6789
  - mediatek_chipset MT6833
  - mediatek_chipset MT6835
  - mediatek_chipset MT6853
  - mediatek_chipset MT6855
  - mediatek_chipset MT6858
  - mediatek_chipset MT6877
  - mediatek_chipset MT6878
  - mediatek_chipset MT6879
  - mediatek_chipset MT6881
  - mediatek_chipset MT6883
  - mediatek_chipset MT6885
  - mediatek_chipset MT6886
  - mediatek_chipset MT6889
  - mediatek_chipset MT6893
  - mediatek_chipset MT6895
  - mediatek_chipset MT6897
  - mediatek_chipset MT6899
  - mediatek_chipset MT6983
  - mediatek_chipset MT6985
  - mediatek_chipset MT6989
  - mediatek_chipset MT6991
  - mediatek_chipset MT6993
  - mediatek_chipset MT8126
  - mediatek_chipset MT8171
  - mediatek_chipset MT8186
  - mediatek_chipset MT8188
  - mediatek_chipset MT8189
  - mediatek_chipset MT8195
  - mediatek_chipset MT8196
  - mediatek_chipset MT8367
  - mediatek_chipset MT8391
  - mediatek_chipset MT8395
  - mediatek_chipset MT8668
  - mediatek_chipset MT8676
  - mediatek_chipset MT8678
  - mediatek_chipset MT8695
  - mediatek_chipset MT8696
  - mediatek_chipset MT8781
  - mediatek_chipset MT8788E
  - mediatek_chipset MT8792
  - mediatek_chipset MT8793
  - mediatek_chipset MT8799
  - mediatek_chipset MT8910
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T02:16:50.660'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20521'
references:
  - url: 'https://www.mediatek.com/product-security-bulletin/October-2026'
    label: security@mediatek.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-05T02:10:36.194Z'
---

## Overview

In Video HAL, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11375674; Issue ID: MSV-9571.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.