CVE-2026-20589

Analyzed Analyzed - Analysis Complete

Out of Bounds Write in MediaTek Venc Driver

Publication date: 2026-10-05

Last updated on: 2026-10-09

Assigner: MediaTek, Inc.

Description

In venc, there is a possible out of bounds write due to type confusion. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11383899; Issue ID: MSV-9606.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-05

Last Modified

2026-10-09

Generated

2026-10-19

AI Q&A

2026-10-05

EPSS Evaluated

2026-10-18

NVD

CVE-2026-20589

EUVD

EUVD-2026-92207

Affected Vendors & Products

Vendor	Product	Version / Range
mediatek	mt2718_firmware	*
mediatek	mt6768_firmware	*
mediatek	mt6769_firmware	*
mediatek	mt6789_firmware	*
mediatek	mt6833_firmware	*
mediatek	mt6855_firmware	*
mediatek	mt6877_firmware	*
mediatek	mt8186_firmware	*
mediatek	mt8188_firmware	*
mediatek	mt8189_firmware	*
mediatek	mt8195_firmware	*
mediatek	mt8196_firmware	*
mediatek	mt8367_firmware	*
mediatek	mt8391_firmware	*
mediatek	mt8395_firmware	*
mediatek	mt8668_firmware	*
mediatek	mt8676_firmware	*
mediatek	mt8678_firmware	*
mediatek	mt8696_firmware	*
mediatek	mt8781_firmware	*
mediatek	mt8788e_firmware	*
mediatek	mt8792_firmware	*
mediatek	mt8793_firmware	*
mediatek	mt8799_firmware	*
mediatek	mt8910_firmware	*

Helpful Resources

Exploitability

CWE

KEV

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

Attack-Flow Graph

Executive Summary

This vulnerability is a type confusion issue in the venc component. It allows an out of bounds write, which could lead to local privilege escalation if an attacker already has System privilege. Exploitation does not require user interaction.

Detection Guidance

Detection requires checking for the specific patch or issue ID mentioned in the CVE. Verify if your system has the vulnerable venc component installed and compare it against Patch ID ALPS11383899 or Issue ID MSV-9606. No specific commands are provided in the context.

Impact Analysis

If exploited, this vulnerability could allow an attacker with existing System privileges to escalate their privileges further. This could lead to unauthorized access or control over the affected system.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves a local privilege escalation in the venc component, which requires prior System privilege access. Without additional context on data handling or exposure, its compliance impact remains unclear.

Mitigation Strategies

Apply the patch provided by MediaTek with Patch ID ALPS11383899 to address the type confusion issue in venc that could lead to local privilege escalation.

Hi! I’m here to help you understand CVE-2026-20589. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70