Out of Bounds Write Vulnerability in MediaTek WLAN AP Driver
CVE-2025-20719

8.8HIGH

Key Information:

Vendor

MediaTek
Status
Mt6890, Mt7603, Mt7615, Mt7622, Mt7915, Mt7916, Mt7981, Mt7986
Vendor
CVE Published:
14 October 2025

What is CVE-2025-20719?

An out of bounds write vulnerability exists in the MediaTek WLAN AP driver due to improper bounds checking. This issue can potentially allow an adjacent attacker to escalate privileges without requiring additional execution permissions or user interaction, making it a significant risk for affected systems.

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Affected Version(s)

MT6890, MT7603, MT7615, MT7622, MT7915, MT7916, MT7981, MT7986 SDK release 7.6.7.2 and before / OpenWrt 19.07, 21.02 (MT6890)

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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