---
id: CVE-2026-20550
title: 'In gnss, there is a possible out of bounds write due to a missing bounds check'
summary: >-
  In gnss, there is a possible out of bounds write due to a missing bounds
  check. This could lead to local denial of service with no additional execution
  privileges needed. User interaction is needed for exploitation. Patch ID:
  ALPS1130981…
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: adp
cwe:
  - CWE-787
vendor: 'MediaTek, Inc.'
product: MediaTek chipset
affected:
  - mediatek_chipset MT2735
  - mediatek_chipset MT2737
  - mediatek_chipset MT6880
  - mediatek_chipset MT6890
  - mediatek_chipset MT6980D
  - mediatek_chipset MT6982
  - mediatek_chipset MT6986
  - mediatek_chipset MT6988
  - mediatek_chipset MT6990
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-02T17:05:35.782608Z'
published: '2026-11-02'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T17:10:44.297Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-20550'
references:
  - url: 'https://www.mediatek.com/product-security-bulletin/November-2026'
tags:
  - cve.org
epss: 0.00135
epssPercentile: 0.03015
ingestedAt: '2026-11-05T19:30:42.721Z'
---

## Overview

In gnss, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS11309816; Issue ID: MSV-10731.

## Affected

- `mediatek_chipset MT2735`
- `mediatek_chipset MT2737`
- `mediatek_chipset MT6880`
- `mediatek_chipset MT6890`
- `mediatek_chipset MT6980D`
- `mediatek_chipset MT6982`
- `mediatek_chipset MT6986`
- `mediatek_chipset MT6988`
- `mediatek_chipset MT6990`

## Remediation

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