---
id: CVE-2026-20574
title: 'In afe, there is a possible memory corruption due to use after free'
summary: >-
  In afe, 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'
cvssSource: adp
cwe:
  - CWE-843
vendor: 'MediaTek, Inc.'
product: MediaTek chipset
affected:
  - mediatek_chipset MT2735
  - mediatek_chipset MT2737
  - mediatek_chipset MT6768
  - mediatek_chipset MT6781
  - mediatek_chipset MT6789
  - mediatek_chipset MT6853
  - mediatek_chipset MT6855
  - mediatek_chipset MT6877
  - mediatek_chipset MT6878
  - mediatek_chipset MT6885
  - mediatek_chipset MT6886
  - mediatek_chipset MT6890
  - mediatek_chipset MT6895
  - mediatek_chipset MT6897
  - mediatek_chipset MT6899
  - mediatek_chipset MT6980D
  - mediatek_chipset MT6985
  - mediatek_chipset MT6988
  - mediatek_chipset MT6989
  - mediatek_chipset MT6990
  - mediatek_chipset MT6991
  - mediatek_chipset MT6993
  - mediatek_chipset MT8168
  - mediatek_chipset MT8186
  - mediatek_chipset MT8188
  - mediatek_chipset MT8189
  - mediatek_chipset MT8195
  - mediatek_chipset MT8196
  - mediatek_chipset MT8365
  - mediatek_chipset MT8367
  - mediatek_chipset MT8390
  - mediatek_chipset MT8391
  - mediatek_chipset MT8668
  - mediatek_chipset MT8678
  - mediatek_chipset MT8793
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-02T00:00:00+00:00'
published: '2026-11-02'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T04:55:46.315Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-20574'
references:
  - url: 'https://www.mediatek.com/product-security-bulletin/November-2026'
tags:
  - cve.org
epss: 0.00117
epssPercentile: 0.01687
ingestedAt: '2026-11-05T19:30:42.905Z'
---

## Overview

In afe, 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: ALPS11431400; Issue ID: MSV-9922.

## Affected

- `mediatek_chipset MT2735`
- `mediatek_chipset MT2737`
- `mediatek_chipset MT6768`
- `mediatek_chipset MT6781`
- `mediatek_chipset MT6789`
- `mediatek_chipset MT6853`
- `mediatek_chipset MT6855`
- `mediatek_chipset MT6877`
- `mediatek_chipset MT6878`
- `mediatek_chipset MT6885`
- `mediatek_chipset MT6886`
- `mediatek_chipset MT6890`
- `mediatek_chipset MT6895`
- `mediatek_chipset MT6897`
- `mediatek_chipset MT6899`
- `mediatek_chipset MT6980D`
- `mediatek_chipset MT6985`
- `mediatek_chipset MT6988`
- `mediatek_chipset MT6989`
- `mediatek_chipset MT6990`
- `mediatek_chipset MT6991`
- `mediatek_chipset MT6993`
- `mediatek_chipset MT8168`
- `mediatek_chipset MT8186`
- `mediatek_chipset MT8188`
- `mediatek_chipset MT8189`
- `mediatek_chipset MT8195`
- `mediatek_chipset MT8196`
- `mediatek_chipset MT8365`
- `mediatek_chipset MT8367`
- `mediatek_chipset MT8390`
- `mediatek_chipset MT8391`
- `mediatek_chipset MT8668`
- `mediatek_chipset MT8678`
- `mediatek_chipset MT8793`

## Remediation

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