CVE-2026-20508 - Vulnerability Details - OpenCVE

In Power HAL, there is a possible escalation of privilege 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: ALPS11165543; Issue ID: MSV-9012.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

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.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Mediatek, Inc.	Mediatek Chipset

No data.

No data.

References

Link	Providers
https://www.mediatek.com/product-security-bulletin/September-2026

History

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

Type	Values Removed	Values Added
Title		Power HAL Type‑Confusion Privilege Escalation in MediaTek Chipsets

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

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/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 06:45:00 +0000

Type	Values Removed	Values Added
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 Power HAL, there is a possible escalation of privilege 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: ALPS11165543; Issue ID: MSV-9012.
Weaknesses		CWE-843
References		https://www.mediatek.com/product-security-bulletin/September-2026

MITRE

Status: PUBLISHED

Assigner: MediaTek

Published: 2026-09-07T01:57:24.237Z

Updated: 2026-09-08T03:55:24.329Z

Reserved: 2025-11-03T01:30:59.029Z

Link: CVE-2026-20508

Vulnrichment

Updated: 2026-09-07T10:34:02.904Z

NVD

Status : Deferred

Published: 2026-09-07T02:17:19.470

Modified: 2026-09-08T18:37:41.047

Link: CVE-2026-20508

Redhat

No data.

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