Privilege Escalation in MediaTek WLAN STA Driver
CVE-2026-20407

9.3CRITICAL

Key Information:

Vendor

MediaTek
Status
Mediatek Chipset
Vendor
CVE Published:
2 February 2026

What is CVE-2026-20407?

A vulnerability in the MediaTek WLAN STA driver exposes the system to potential local privilege escalation due to a missing bounds check. This flaw enables an attacker with user execution privileges to escalate their access level without requiring user interaction. Affected systems should implement the appropriate patches to mitigate the risk associated with this vulnerability. For further details and patches, refer to the MediaTek product security bulletin.

Affected Version(s)

MediaTek chipset MT7902

MediaTek chipset MT7920

MediaTek chipset MT7921

References

https://corp.mediatek.com/product-security-bulletin/Febru...

CVSS V3.1

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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