In Modem, there is a possible out of bounds write due to a missing bounds check. 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: MOLY01267281 / MOLY01318201; Issue ID: MSV-6486.

Metrics

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Mediatek, Inc.
  • Mediatek Chipset

No data.

No data.

References
Link Providers
https://corp.mediatek.com/product-security-bulletin/July-2026 cve-icon
History

Tue, 07 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Leading to Remote Denial of Service on MediaTek Chipsets

Mon, 06 Jul 2026 15:45:00 +0000

Type Values Removed Values Added
Title Missing bounds check in Modem firmware causes remote denial of service

Sun, 05 Jul 2026 22:30:00 +0000

Type Values Removed Values Added
Title Missing bounds check in Modem firmware causes remote denial of service

Sun, 05 Jul 2026 11:15:00 +0000

Type Values Removed Values Added
Title Modem Out-of-Bounds Write Allowing Remote Denial-of-Service via Rogue Base Station

Sat, 04 Jul 2026 22:45:00 +0000

Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Allowing Remote Denial‑of‑Service via Rogue Base Station Modem Out-of-Bounds Write Allowing Remote Denial-of-Service via Rogue Base Station

Sat, 04 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Allowing Remote Denial‑of‑Service via Rogue Base Station

Sat, 04 Jul 2026 11:30:00 +0000

Type Values Removed Values Added
Title Modem Out-of-bounds Write Leading to Remote Denial of Service

Fri, 03 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Title Modem Out-of-bounds Write Leading to Remote Denial of Service

Fri, 03 Jul 2026 12:00:00 +0000

Type Values Removed Values Added
Title Out-of-bounds Write in Modem Firmware Enables Remote Denial of Service

Fri, 03 Jul 2026 05:00:00 +0000

Type Values Removed Values Added
Title Out-of-bounds Write in Modem Firmware Enables Remote Denial of Service

Thu, 02 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Title Modem Firmware Out‑of‑Bounds Write Causing Remote Denial of Service

Thu, 02 Jul 2026 11:00:00 +0000

Type Values Removed Values Added
Title Modem Firmware Out‑of‑Bounds Write Causing Remote Denial of Service

Thu, 02 Jul 2026 04:15:00 +0000

Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Allowing Remote Denial of Service

Wed, 01 Jul 2026 23:45:00 +0000

Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Allowing Remote Denial of Service

Wed, 01 Jul 2026 17:30:00 +0000

Type Values Removed Values Added
Title Out Of Bounds Write in MediaTek Modem Leading to Remote Denial Of Service

Wed, 01 Jul 2026 13:45:00 +0000

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

Wed, 01 Jul 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 01 Jul 2026 09:15:00 +0000

Type Values Removed Values Added
Title Out Of Bounds Write in MediaTek Modem Leading to Remote Denial Of Service

Wed, 01 Jul 2026 03:30:00 +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 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: MOLY01267281 / MOLY01318201; Issue ID: MSV-6486.
Weaknesses CWE-787
References
cve-icon MITRE

Status: PUBLISHED

Assigner: MediaTek

Published: 2026-07-01T03:14:03.686Z

Updated: 2026-07-01T10:39:51.662Z

Reserved: 2025-11-03T01:30:59.014Z

Link: CVE-2026-20461

cve-icon Vulnrichment

Updated: 2026-07-01T10:34:38.735Z

cve-icon NVD

No data.

cve-icon Redhat

No data.