CVE-2026-20456

MEDIUM

MediaTek Chipset - Out-of-bounds Write

Title source: rule
STIX 2.1

Description

In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.

Scores

CVSS v3 5.5
EPSS 0.0010
EPSS Percentile 1.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-787
Status published
Products (12)
mediatek/mt7902_firmware
mediatek/mt7920_firmware
mediatek/mt7921_firmware
mediatek/mt7922_firmware
mediatek/mt7925_firmware
mediatek/mt7927_firmware
MediaTek, Inc./MediaTek chipset MT7902
MediaTek, Inc./MediaTek chipset MT7920
MediaTek, Inc./MediaTek chipset MT7921
MediaTek, Inc./MediaTek chipset MT7922
... and 2 more
Published Jun 01, 2026
Tracked Since Jun 01, 2026