Out of Bounds Write Vulnerability in MediaTek WLAN AP Driver
CVE-2025-20741

6.7MEDIUM

Key Information:

Vendor

MediaTek
Status
Mt6890, Mt7615, Mt7622, Mt7663, Mt7915, Mt7916, Mt7981, Mt7986
Vendor
CVE Published:
4 November 2025

What is CVE-2025-20741?

An out of bounds write vulnerability exists in the MediaTek WLAN access point driver due to inadequate bounds checking. This flaw may allow an attacker with system privileges to escalate their privileges further without requiring user interaction. The issue underscores the importance of enforcing stringent input validation to mitigate potential exploitation. A patch addressing this issue has been released, as documented in the related security bulletin.

Affected Version(s)

MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986 SDK release 7.6.7.2 and before / openWRT 19.07, 21.02

References

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

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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