#VU122204 Improper Check for Unusual or Exceptional Conditions in MediaTek products - CVE-2026-20419

Vulnerability identifier: #VU122204

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2026-20419

CWE-ID: CWE-754

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
MT6890
MT6989TB
MT7902
MT7915
MT7916
MT7920
MT7921
MT7922
MT7925
MT7927
MT7981
MT7986
MT8196
MT8668
MT8676
MT8678
MT8775
MT8791T
MT8792
MT8793
MT8796
MT8873
MT8883
MT8893
MT8910

Software vendor:
MediaTek

The vulnerability allows a local application to perform service disruption.

The vulnerability exists due to an uncaught exception in wlan subcomponent. A local application can perform service disruption.

Install security update from vendor's website.

• https://corp.mediatek.com/product-security-bulletin/February-2026