CVE-2026-20528

Published: Oct 5, 2026Modified: Oct 9, 2026

6.7

Vector

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

Exploitability: 0.8 / Impact: 5.9

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

Description

In ccci, there is a possible out of bounds write and read due to a missing bounds check. This could lead to local information disclosure, memory corruption, crashes, or privilege escalation if a malicious actor has already obtained the System privilege. User interaction is needed for exploitation. Patch ID: ALPS11428950 (Note: For MT6880, MT6890) / ALPS10563453 (Note: For MT6980D, MT6990, MT6986, MT6986D, MT6813, MT6988) / AUTO00858766 (Note: For MT2735, MT2737); Issue ID: MSV-9893.

Affected (10)

Products: Mediatek: Mt2735 Firmware, Mt2737 Firmware, Mt6813 Firmware, Mt6880 Firmware, Mt6890 Firmware, Mt6980d Firmware, Mt6986 Firmware, Mt6986d Firmware, Mt6988 Firmware, Mt6990 Firmware

10 products

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt2735 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt2735	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt2737 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt2737	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6813 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6813	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6880 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6880	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6890 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6890	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6980d Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6980d	All versions

Configuration G

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6986 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6986	All versions

Configuration H

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6986d Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6986d	All versions

Configuration I

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6988 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6988	All versions

Configuration J

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6990 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6990	All versions

Related CWEs

CWE-787

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

References (1)

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

Source: security@mediatek.com

Vendor Advisory

Timeline

No history available yet.