MediaTek WLAN AP Driver OOB Write Escalation
CVE-2026-20465 Published on August 3, 2026
In wlan AP driver, there is a possible out of bounds write due to a missing bounds check. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00489200; Issue ID: MSV-7834.
Vulnerability Analysis
Attack Vector:
ADJACENT_NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
NONE
Weakness Type
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
Affected Versions
MediaTek, Inc. MediaTek chipset:- Version MT6890 is affected.
- Version MT7915 is affected.
- Version MT7916 is affected.
- Version MT7981 is affected.
- Version MT7986 is affected.