CVE-2026-20474

Published: Aug 3, 2026Modified: Aug 19, 2026

6.0

Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Exploitability: 0.8 / Impact: 5.2

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

In display, there is a possible escalation of privilege due to a race condition. 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: ALPS11019183; Issue ID: MSV-7758.

Affected (17)

Products: Mediatek: Mt6991 Firmware, Mt6993 Firmware, Mt8126 Firmware, Mt8171 Firmware, Mt8188 Firmware, Mt8189 Firmware, Mt8367 Firmware, Mt8668 Firmware, Mt8676 Firmware, Mt8678 Firmware, Mt8766 Firmware, Mt8768 Firmware, Mt8781 Firmware, Mt8786 Firmware, Mt8791t Firmware, Mt8799 Firmware, Mt8910 Firmware

17 products

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6991 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6991	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6993 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6993	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8126 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8126	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8171 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8171	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8188 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8188	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8189 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8189	All versions

Configuration G

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8367 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8367	All versions

Configuration H

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8668 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8668	All versions

Configuration I

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8676 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8676	All versions

Configuration J

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8678 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8678	All versions

Configuration K

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8766 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8766	All versions

Configuration L

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8768 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8768	All versions

Configuration M

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8781 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8781	All versions

Configuration N

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8786 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8786	All versions

Configuration O

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8791t Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8791t	All versions

Configuration P

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8799 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8799	All versions

Configuration Q

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8910 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8910	All versions

Related CWEs

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

References (1)

https://www.mediatek.com/product-security-bulletin/August-2026

Source: security@mediatek.com

Vendor Advisory

Timeline

No history available yet.