---
id: CVE-2025-20719
title: >-
  In wlan AP driver, there is a possible out of bounds write due to an incorrect
  bounds check
summary: >-
  In wlan AP driver, there is a possible out of bounds write due to an incorrect
  bounds check. This could lead to remote (proximal/adjacent) escalation of
  privilege with no additional execution privileges needed. User interaction is
  not ne…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-121
  - CWE-787
vendor: mediatek
product: software_development_kit
affected:
  - software_development_kit <= 7.6.7.2
  - openwrt = 19.07.0
  - openwrt = 21.02.0
published: '2025-10-14'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T12:10:00.217'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-20719'
references:
  - url: 'https://corp.mediatek.com/product-security-bulletin/October-2025'
    label: security@mediatek.com
tags:
  - nvd
epss: 0.0026
epssPercentile: 0.16248
ingestedAt: '2026-10-08T11:31:27.372Z'
---

## Overview

In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00418955; Issue ID: MSV-3570.

## Affected

- `software_development_kit <= 7.6.7.2`
- `openwrt = 19.07.0`
- `openwrt = 21.02.0`

## Remediation

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