Out of Bounds Write Vulnerability in MediaTek Wireless AP Driver
CVE-2025-20736

6.7MEDIUM

Key Information:

Vendor

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

What is CVE-2025-20736?

A vulnerability has been identified in the MediaTek wireless access point driver that allows for an out of bounds write due to improper bounds checking. If a malicious actor gains system privileges, they could exploit this issue to escalate their privileges further without requiring user interaction. Ensuring the implementation of the latest patch is crucial for maintaining system security and preventing potential exploitations.

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

JSON
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CVE-2025-20736 : Out of Bounds Write Vulnerability in MediaTek Wireless AP Driver