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.

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.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
MediaTek, Inc. MediaTek chipset unaffected
Version Status Constraints
MT2718 affected —
MT6580 affected —
MT6739 affected —
MT6761 affected —
MT6765 affected —
MT6768 affected —
MT6769 affected —
MT6779 affected —
MT6781 affected —
MT6785 affected —
MT6789 affected —
MT6833 affected —
MT6835 affected —
MT6853 affected —
MT6855 affected —
MT6858 affected —
MT6873 affected —
MT6877 affected —
MT6878 affected —
MT6879 affected —
MT6881 affected —
MT6883 affected —
MT6885 affected —
MT6886 affected —
MT6889 affected —
MT6893 affected —
MT6895 affected —
MT6897 affected —
MT6899 affected —
MT6983 affected —
MT6985 affected —
MT6989 affected —
MT6991 affected —
MT6993 affected —
MT8126 affected —
MT8171 affected —
MT8186 affected —
MT8188 affected —
MT8189 affected —
MT8195 affected —
MT8196 affected —
MT8367 affected —
MT8391 affected —
MT8395 affected —
MT8668 affected —
MT8676 affected —
MT8678 affected —
MT8696 affected —
MT8781 affected —
MT8788E affected —
MT8792 affected —
MT8799 affected —
MT8910 affected —

No data.

No data.

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Vendors Products
Mediatek, Inc. Subscribe
Mediatek Chipset Subscribe

Project Subscriptions

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 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: 2026-09-07T10:40:21.042Z

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 : Received

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

Modified: 2026-09-07T11:17:21.580

Link: CVE-2026-20501

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-07T03:30:16Z

Weaknesses