CVE-2026-20493
Received Received - Intake

Out of Bounds Write in MediaTek Wi-Fi Driver

Publication date: 2026-08-03

Last updated on: 2026-08-03

Assigner: MediaTek, Inc.

Description
In wifi, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: BORA00154903; Issue ID: MSV-7575.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-03
Last Modified
2026-08-03
Generated
2026-08-03
AI Q&A
2026-08-03
EPSS Evaluated
N/A
NVD
CVE-2026-20493
EUVD
EUVD-2026-52083

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mediatek wifi From BORA00154903 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a vulnerability in MediaTek's WiFi component where a missing bounds check could allow an out-of-bounds write. This flaw could be exploited by a malicious actor with System privilege to cause a local denial of service. No user interaction is required for exploitation.

Impact Analysis

If exploited, this vulnerability could lead to a denial of service on your device. Since it requires System privilege, an attacker would need prior access to your system to trigger this issue.

Mitigation Strategies

Apply the patch with ID BORA00154903 provided by MediaTek to address the missing bounds check in the wifi component. Ensure the System privilege is properly secured to prevent local denial of service.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-20493. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart