CVE-2026-20471
Received Received - Intake

Out of Bounds Write in MediaTek Device Firmware

Publication date: 2026-08-03

Last updated on: 2026-08-03

Assigner: MediaTek, Inc.

Description
In DA, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS10991588 (Note: For MT6880, MT6890, MT6990, MT6988, MT6986, MT6813) / AUTO00851171 (Note: For MT2735, MT2737); Issue ID: MSV-7790.

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-2026-20471
EUVD
EUVD-2026-52060

Affected Vendors & Products

Showing 8 associated CPEs
Vendor Product Version / Range
mediatek mt6880 *
mediatek mt6890 *
mediatek mt6990 *
mediatek mt6988 *
mediatek mt6986 *
mediatek mt6813 *
mediatek mt2735 *
mediatek mt2737 *

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 vulnerability is an out of bounds write issue caused by a missing bounds check in DA. It allows local denial of service if an attacker has physical access to the device. No additional privileges or user interaction are required for exploitation.

Detection Guidance

This vulnerability requires physical access to exploit and is specific to certain MediaTek chipsets. Detection would involve checking device firmware versions against patched versions mentioned in Patch ID ALPS10991588 or AUTO00851171. No direct network or system commands are provided in the context for detection.

Impact Analysis

An attacker with physical access could exploit this to cause a denial of service on the affected device. This may result in the device becoming unresponsive or crashing, disrupting normal operations.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves a possible out of bounds write leading to local denial of service with physical access, which does not inherently relate to data protection or privacy regulations.

Mitigation Strategies

Apply the provided patches: ALPS10991588 for MT6880, MT6890, MT6990, MT6988, MT6986, MT6813 and AUTO00851171 for MT2735, MT2737. Ensure physical access to affected devices is restricted to prevent exploitation.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-20471. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart