CVE-2026-20431

Published: Apr 7, 2026Modified: Jul 24, 2026

6.5

Vector

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

Exploitability: 2.8 / Impact: 3.6

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

Description

In Modem, there is a possible system crash due to a logic error. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01106496; Issue ID: MSV-4467.

Affected (19)

Products: Mediatek: Mt6813 Firmware, Mt6815 Firmware, Mt6835 Firmware, Mt6878 Firmware, Mt6897 Firmware, Mt6899 Firmware, Mt6986 Firmware, Mt6991 Firmware, Mt6993 Firmware, Mt8668 Firmware, Mt8676 Firmware, Mt8678 Firmware, Mt8755 Firmware, Mt8775 Firmware, Mt8792 Firmware, Mt8793 Firmware, Mt8863 Firmware, Mt8873 Firmware, Mt8883 Firmware

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6813 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6813	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6815 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6815	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6835 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6835	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6878 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6878	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6897 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6897	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6899 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6899	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 Mt6991 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6991	All versions

Configuration I

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt6993 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt6993	All versions

Configuration J

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8668 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8668	All versions

Configuration K

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8676 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8676	All versions

Configuration L

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8678 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8678	All versions

Configuration M

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8755 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8755	All versions

Configuration N

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8775 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8775	All versions

Configuration O

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8792 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8792	All versions

Configuration P

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8793 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8793	All versions

Configuration Q

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8863 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8863	All versions

Configuration R

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8873 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8873	All versions

Configuration S

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mediatek Mt8883 Firmware	All versions

Running on/with	Platform Versions
Mediatek Mt8883	All versions

Related CWEs

CWE-770

Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References (1)

https://corp.mediatek.com/product-security-bulletin/April-2026

Source: security@mediatek.com

Vendor Advisory

Timeline

No history available yet.