CVE-2026-20408

HIGH

Wlan - Buffer Overflow

Title source: llm

Description

In wlan, there is a possible out of bounds write due to a heap buffer overflow. 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: WCNCR00461651; Issue ID: MSV-4758.

References (1)

[Vendor Advisory] https://corp.mediatek.com/product-security-bulletin/February-2026

Scores

CVSS v3 8.8

EPSS 0.0001

EPSS Percentile 0.4%

Attack Vector ADJACENT_NETWORK

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

Classification

CWE

CWE-122 CWE-787

Status published

Affected Products (4)

mediatek/software_development_kit < 7.6.7.2

openwrt/openwrt

Timeline

Published Feb 02, 2026

Tracked Since Feb 18, 2026