CVE-2026-20419

MEDIUM

Wlan AP/STA firmware - DoS

Title source: llm
STIX 2.1

Description

In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461663 / WCNCR00463309; Issue ID: MSV-4852.

Scores

CVSS v3 6.5
EPSS 0.0001
EPSS Percentile 2.6%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-754
Status published
Products (50)
mediatek/nbiot_sdk < 3.6
mediatek/software_development_kit < 7.6.7.2
MediaTek, Inc./MediaTek chipset MT6890
MediaTek, Inc./MediaTek chipset MT6989TB
MediaTek, Inc./MediaTek chipset MT7902
MediaTek, Inc./MediaTek chipset MT7915
MediaTek, Inc./MediaTek chipset MT7916
MediaTek, Inc./MediaTek chipset MT7920
MediaTek, Inc./MediaTek chipset MT7921
MediaTek, Inc./MediaTek chipset MT7922
... and 40 more
Published Feb 02, 2026
Tracked Since Feb 18, 2026