CVE-2026-20419: Medium severity MediaTek Nbiot Sdk vulnerability

Published Feb 2, 2026
·
Updated

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.

Affected Software

30 affected components
All of the following
Any of the following
MediaTek Nbiot Sdk<=3.6
MediaTek Software Development Kit<=7.6.7.2
Any of the following
MediaTek Mt6890
MediaTek Mt6989tb
MediaTek Mt7902
MediaTek MT7915
MediaTek Mt7916
MediaTek Mt7920
MediaTek Mt7921
MediaTek Mt7922
MediaTek Mt7925
MediaTek Mt7927
MediaTek Mt7981
MediaTek Mt7986
MediaTek Mt8196
MediaTek Mt8668
MediaTek Mt8676
MediaTek Mt8678
MediaTek Mt8775
MediaTek Mt8791t
MediaTek Mt8792
MediaTek Mt8793
MediaTek Mt8796
MediaTek Mt8873
MediaTek Mt8883
MediaTek Mt8893
MediaTek Mt8910
All of the following
Any of the following
OpenWrt OpenWrt=19.07.0
OpenWrt OpenWrt=21.02.0
MediaTek Mt6890

Event History

Feb 2, 2026
CVE Published
via MITRE·08:16 AM
Data Sourced
via MITRE·08:16 AM
DescriptionWeakness
Data Sourced
via NVD·09:15 AM
DescriptionSeverityWeaknessAffected Software
Dec 24, 58068
Event
via NVD·01:18 AM
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Frequently Asked Questions

1

What is the severity of CVE-2026-20419?

The severity of CVE-2026-20419 is categorized as a denial of service vulnerability.

2

How do I fix CVE-2026-20419?

To fix CVE-2026-20419, apply the patch identified by WCNCR00461663 or WCNCR004.

3

What types of devices are affected by CVE-2026-20419?

CVE-2026-20419 affects specific versions of MediaTek Nbiot SDK and MediaTek Software Development Kit.

4

Can CVE-2026-20419 be exploited without user interaction?

Yes, CVE-2026-20419 can be exploited without user interaction.

5

What is the potential impact of CVE-2026-20419?

The potential impact of CVE-2026-20419 is that it can lead to a system becoming unresponsive, resulting in denial of service.

Contact

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