---
id: CVE-2026-20536
title: 'In aidl, there is a possible memory corruption due to use after free'
summary: >-
  In aidl, there is a possible memory corruption due to use after free. 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…
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-416
vendor: mediatek
product: mt6878_firmware
affected:
  - mt6878_firmware
  - mt6881_firmware
  - mt6899_firmware
  - mt6989_firmware
  - mt6991_firmware
  - mt6993_firmware
  - mt8188_firmware
  - mt8189_firmware
  - mt8668_firmware
  - mt8695_firmware
  - mt8696_firmware
  - mt8781_firmware
  - mt8910_firmware
published: '2026-10-05'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T14:27:49.533'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20536'
references:
  - url: 'https://www.mediatek.com/product-security-bulletin/October-2026'
    label: security@mediatek.com
tags:
  - nvd
  - cve.org
epss: 0.00114
epssPercentile: 0.01459
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-05T10:25:25.709548Z'
ingestedAt: '2026-10-05T02:10:36.182Z'
---

## Overview

In aidl, there is a possible memory corruption due to use after free. 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: ALPS11242428; Issue ID: MSV-9038.

## Affected

- `mt6878_firmware`
- `mt6881_firmware`
- `mt6899_firmware`
- `mt6989_firmware`
- `mt6991_firmware`
- `mt6993_firmware`
- `mt8188_firmware`
- `mt8189_firmware`
- `mt8668_firmware`
- `mt8695_firmware`
- `mt8696_firmware`
- `mt8781_firmware`
- `mt8910_firmware`

## Remediation

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