CVE-2026-20462
Received Received - Intake

Memory Corruption in Telephony Due to Heap Buffer Overflow

Publication date: 2026-07-01

Last updated on: 2026-07-01

Assigner: MediaTek, Inc.

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-07-01
Last Modified
2026-07-01
Generated
2026-07-01
AI Q&A
2026-07-01
EPSS Evaluated
N/A
NVD
CVE-2026-20462
EUVD
EUVD-2026-40875

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mediatek telephony *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is a memory corruption issue caused by a heap buffer overflow in the Telephony component. It can be exploited locally to escalate privileges if the attacker already has System privileges. No user interaction is required to exploit this vulnerability.

Impact Analysis

The vulnerability can lead to local escalation of privilege, meaning an attacker who already has System privileges could gain higher or unauthorized access. This could compromise the security of the affected system.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-20462. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart