Out of Bounds Write Vulnerability in Mediatek WLAN AP Driver
CVE-2025-20712

8.8HIGH

Key Information:

Vendor

MediaTek
Status
Mt6990, Mt7990, Mt7991, Mt7992, Mt7993
Vendor
CVE Published:
14 October 2025

What is CVE-2025-20712?

A vulnerability has been identified in the Mediatek WLAN AP driver where an incorrect bounds check leads to a possible out of bounds write. This flaw may enable a remote party to escalate privileges without requiring additional execution permissions or user interaction, potentially exposing systems to unauthorized access. A patch has been issued to address this issue (Patch ID: WCNCR00422323; Issue ID: MSV-3810). For further details, please refer to the Mediatek product security bulletin.

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Affected Version(s)

MT6990, MT7990, MT7991, MT7992, MT7993 SDK release 8.3.1.1 and before / OpenWrt 21.02, 23.05 (MT6990)

References

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

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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