CVE-2026-20432 - Vulnerability Details - OpenCVE

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01406170; Issue ID: MSV-4461.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

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

History

Tue, 07 Apr 2026 15:15:00 +0000

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 07 Apr 2026 09:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mediatek, Inc. Mediatek, Inc. mediatek Chipset
Vendors & Products		Mediatek, Inc. Mediatek, Inc. mediatek Chipset

Tue, 07 Apr 2026 07:15:00 +0000

Type	Values Removed	Values Added
Description		In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01406170; Issue ID: MSV-4461.
Weaknesses		CWE-787
References		https://corp.mediatek.com/product-security-bulletin/April-2026

MITRE

Status: PUBLISHED

Assigner: MediaTek

Published: 2026-04-07T03:25:30.263Z

Updated: 2026-04-07T12:59:56.698Z

Reserved: 2025-11-03T01:30:59.011Z

Link: CVE-2026-20432

Vulnrichment

Updated: 2026-04-07T12:59:49.248Z

NVD

Status : Undergoing Analysis

Published: 2026-04-07T04:17:12.413

Modified: 2026-04-07T14:16:19.247

Link: CVE-2026-20432

Redhat

No data.

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