CVE-2026-20491

In med, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS10981478 (Note: For MT6890, MT6990, MT6988) / AUTO00851173 (Note: For MT2735, MT2737); Issue ID: MSV-7652.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.mediatek.com/product-security-bulletin/August-2026	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:mediatek:mt2735_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt2735:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:mediatek:mt2737_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt2737:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:mediatek:mt6890_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:o:mediatek:mt6988_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt6988:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND

cpe:2.3:o:mediatek:mt6990_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt6990:-:*:*:*:*:*:*:*

History

23 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) En med, existe una posible escritura fuera de límites debido a una comprobación de límites incorrecta. Esto podría llevar a una denegación de servicio local con privilegios de ejecución de usuario necesarios. No se necesita interacción del usuario para la explotación. ID del parche: ALPS10981478 (Nota: Para MT6890, MT6990, MT6988) / AUTO00851173 (Nota: Para MT2735, MT2737); ID del problema: MSV-7652.

Information

Published : 2026-08-03 03:16

Updated : 2026-10-23 22:10

NVD link : CVE-2026-20491

Mitre link : CVE-2026-20491

CVE.ORG link : CVE-2026-20491

JSON object : View

Products Affected

mediatek

mt6890_firmware
mt6990_firmware
mt6990
mt2735
mt2737
mt2737_firmware
mt2735_firmware
mt6890
mt6988
mt6988_firmware

CWE

CWE-787

Out-of-bounds Write

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