---
id: CVE-2026-20508
title: >-
  In Power HAL, there is a possible escalation of privilege due to type
  confusion
summary: >-
  In Power HAL, there is a possible escalation of privilege due to type
  confusion. This could lead to local escalation of privilege if a malicious
  actor has already obtained the System privilege. User interaction is not
  needed for exploita…
severity: medium
cvss: 6.7
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-843
vendor: 'MediaTek, Inc.'
product: MediaTek chipset
affected:
  - mediatek_chipset MT2718
  - mediatek_chipset MT6739
  - mediatek_chipset MT6761
  - mediatek_chipset MT6765
  - 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 MT8171
  - mediatek_chipset MT8186
  - mediatek_chipset MT8188
  - mediatek_chipset MT8189
  - mediatek_chipset MT8196
  - mediatek_chipset MT8668
  - mediatek_chipset MT8676
  - mediatek_chipset MT8678
  - mediatek_chipset MT8696
  - mediatek_chipset MT8793
published: '2026-09-07'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T18:37:41.047'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20508'
references:
  - url: 'https://www.mediatek.com/product-security-bulletin/September-2026'
    label: security@mediatek.com
tags:
  - nvd
  - cve.org
epss: 0.00114
epssPercentile: 0.01679
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-07T00:00:00+00:00'
ingestedAt: '2026-09-07T12:10:16.026Z'
---

## Overview

In Power HAL, there is a possible escalation of privilege due to type confusion. 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: ALPS11165543; Issue ID: MSV-9012.

## Remediation

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