In vdec, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11262030; Issue ID: MSV-9197.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00126.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Mediatek, Inc. Subscribe
Mediatek Chipset Subscribe

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Mediatek, Inc. Subscribe
Mediatek Chipset Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.mediatek.com/product-security-bulletin/September-2026 cve-icon cve-icon
History

Mon, 07 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Title Possible Out-of-Bounds Write in MediaTek vdec Leading to Local Privilege Escalation

Mon, 07 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 07 Sep 2026 03:45:00 +0000

Type Values Removed Values Added
Title Possible Out-of-Bounds Write in MediaTek vdec Leading to Local Privilege Escalation
First Time appeared Mediatek, Inc.
Mediatek, Inc. mediatek Chipset
Vendors & Products Mediatek, Inc.
Mediatek, Inc. mediatek Chipset

Mon, 07 Sep 2026 02:00:00 +0000

Type Values Removed Values Added
Description In vdec, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11262030; Issue ID: MSV-9197.
Weaknesses CWE-122
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: MediaTek

Published:

Updated: 2026-09-08T03:55:27.739Z

Reserved: 2025-11-03T01:30:59.028Z

Link: CVE-2026-20501

cve-icon Vulnrichment

Updated: 2026-09-07T10:40:13.154Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-07T02:17:18.800

Modified: 2026-09-08T18:38:46.007

Link: CVE-2026-20501

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-07T14:15:16Z

Weaknesses