CVE-2026-20555
Received Received - Intake

Out of Bounds Read in Modem Leads to DoS

Publication date: 2026-11-02

Last updated on: 2026-11-02

Assigner: MediaTek, Inc.

Description
In Modem, there is a possible out of bounds read 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: MOLY01876664; Issue ID: MSV-9834.

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Meta Information

Published
2026-11-02
Last Modified
2026-11-02
Generated
2026-11-02
AI Q&A
2026-11-02
EPSS Evaluated
N/A
NVD
CVE-2026-20555

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.

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Executive Summary

This vulnerability is an out of bounds read in the Modem component due to a missing bounds check. It allows remote denial of service if a user equipment (UE) connects to a rogue base station controlled by an attacker. No additional privileges or user interaction are required for exploitation.

Impact Analysis

The vulnerability could cause your device to crash or become unresponsive if it connects to a malicious base station. This may lead to temporary loss of service or connectivity, but does not allow unauthorized access or data theft.

Mitigation Strategies

Apply the patch identified as MOLY01876664 from MediaTek to address the missing bounds check in Modem. Ensure all MediaTek chipsets are updated to the latest firmware version to prevent remote denial of service via rogue base stations.

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