CVE-2025-20737

HIGH

MediaTek Software Development Kit - Local Privilege Escalation via Stack-based Buffer Overflow in WLAN AP Driver

Title source: llm

Description

In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00435343; Issue ID: MSV-4040.

References (1)

Core 1

Core References

Vendor Advisory

https://corp.mediatek.com/product-security-bulletin/November-2025

Scores

CVSS v3 7.8

EPSS 0.0001

EPSS Percentile 3.4%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-121 CWE-787

Status published

Products (3)

mediatek/software_development_kit < 7.6.7.2

openwrt/openwrt 19.07.0

openwrt/openwrt 21.02.0

Published Nov 04, 2025

Tracked Since Feb 18, 2026