Privilege Escalation Vulnerability in MediaTek WLAN STA Driver
CVE-2026-20436

6.7MEDIUM

Key Information:

Vendor

MediaTek
Status
Mt7902, Mt7920, Mt7921, Mt7922, Mt7925, Mt7927, Mt8696
Vendor
CVE Published:
2 March 2026

What is CVE-2026-20436?

A vulnerability exists in the MediaTek WLAN STA driver that could enable a local escalation of privilege due to a missing bounds check. This issue allows an attacker who has obtained System privilege to exploit the vulnerability without user interaction. Affected users should apply the provided patch (WCNCR00473802) to mitigate this security risk. For more details, refer to the official security bulletin.

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Affected Version(s)

MT7902, MT7920, MT7921, MT7922, MT7925, MT7927, MT8696 NB SDK release 3.8 and before

References

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

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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