CVE-2026-20527
Received Received - Intake

Modem System Crash via Missing Bounds Check Leads to DoS

Publication date: 2026-10-05

Last updated on: 2026-10-05

Assigner: MediaTek, Inc.

Description
In Modem, there is a possible system crash 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: MOLY01864925 / MOLY01210562; Issue ID: MSV-8303.

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Meta Information

Published
2026-10-05
Last Modified
2026-10-05
Generated
2026-10-05
AI Q&A
2026-10-05
EPSS Evaluated
N/A
NVD
CVE-2026-20527
EUVD
EUVD-2026-92200

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-129 The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

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Executive Summary

This vulnerability in the Mediatek modem allows a remote attacker to crash the system by exploiting a missing bounds check. This can lead to a denial of service if a user equipment connects to a malicious base station controlled by the attacker. No special privileges or user interaction are required for exploitation.

Impact Analysis

If your device uses a Mediatek modem and connects to a rogue base station, this vulnerability could cause your device to crash, leading to a denial of service. This means your device may become unresponsive or require a reboot.

Mitigation Strategies

Apply the provided patch IDs MOLY01864925 or MOLY01210562 to address the missing bounds check in the Modem component.

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