In Telephony, there is a possible memory corruption due to a heap buffer overflow. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11006447; Issue ID: MSV-7871.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

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 total

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

Wed, 08 Jul 2026 14:15:00 +0000

Type Values Removed Values Added
Title Heap Buffer Overflow in Telephony Component Enables Local Privilege Escalation

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

Type Values Removed Values Added
Title Heap Buffer Overflow in Telephony Component Enables Local Privilege Escalation

Mon, 06 Jul 2026 12:00:00 +0000

Type Values Removed Values Added
Title Memory Corruption in MediaTek Telephony Leading to Local Privilege Escalation

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

Type Values Removed Values Added
Title Memory Corruption in MediaTek Telephony Leading to Local Privilege Escalation

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

Type Values Removed Values Added
Title Heap Buffer Overflow in MediaTek Telephony Subsystem Enables Local Privilege Escalation

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

Type Values Removed Values Added
Title Heap Buffer Overflow in MediaTek Telephony Subsystem Enables Local Privilege Escalation

Sat, 04 Jul 2026 07:15:00 +0000

Type Values Removed Values Added
Title Heap Buffer Overflow in Telephony Enables Local Privilege Escalation

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

Type Values Removed Values Added
Title Heap Buffer Overflow in Telephony Enables Local Privilege Escalation

Fri, 03 Jul 2026 08:30:00 +0000

Type Values Removed Values Added
Title Memory Corruption in Telephony Enables Local Privilege Escalation

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

Type Values Removed Values Added
Title Memory Corruption in Telephony Enables Local Privilege Escalation

Thu, 02 Jul 2026 14:00:00 +0000

Type Values Removed Values Added
Title Heap Buffer Overflow in MediaTek Telephony Enables Local Privilege Escalation

Thu, 02 Jul 2026 08:30:00 +0000

Type Values Removed Values Added
Title Heap Buffer Overflow in MediaTek Telephony Enables Local Privilege Escalation

Thu, 02 Jul 2026 01:45:00 +0000

Type Values Removed Values Added
Title MediaTek Telephony Heap Buffer Overflow Leading to Local Privilege Escalation

Wed, 01 Jul 2026 22:00:00 +0000

Type Values Removed Values Added
Title MediaTek Telephony Heap Buffer Overflow Leading to Local Privilege Escalation

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

Type Values Removed Values Added
Title Heap Buffer Overflow in MediaTek Telephony Subsystem Enables Local Privilege Escalation

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': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

ssvc

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

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

Type Values Removed Values Added
Title Heap Buffer Overflow in MediaTek Telephony Subsystem Enables Local Privilege Escalation

Wed, 01 Jul 2026 03:30:00 +0000

Type Values Removed Values Added
Description In Telephony, there is a possible memory corruption due to a heap buffer overflow. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11006447; Issue ID: MSV-7871.
Weaknesses CWE-122
References
cve-icon MITRE

Status: PUBLISHED

Assigner: MediaTek

Published: 2026-07-01T03:14:04.991Z

Updated: 2026-07-02T03:55:17.558Z

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

Link: CVE-2026-20462

cve-icon Vulnrichment

Updated: 2026-07-01T10:36:28.557Z

cve-icon NVD

No data.

cve-icon Redhat

No data.