CVE-2026-20560
Received Received - Intake

Improper Input Validation 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 system crash due to improper input validation. 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: MOLY01870543; Issue ID: MSV-9070.

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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-2026-20560

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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 in Modem where improper input validation could cause a system crash. It may lead to remote denial of service if a user equipment connects to a malicious base station controlled by an attacker. No extra permissions are needed, and user interaction is not required for exploitation.

Detection Guidance

This vulnerability involves improper input validation in MediaTek chipsets leading to system crashes. Detection requires checking for rogue base stations or unusual modem behavior. Monitor for crashes or denial of service events in devices using MediaTek chipsets. No specific commands are provided in the CVE details.

Impact Analysis

If exploited, this vulnerability could cause your device to crash or become unresponsive, disrupting normal functionality. Since it requires a rogue base station, the risk is higher in areas with poor network coverage or untrusted networks.

Mitigation Strategies

Apply the patch identified as MOLY01870543 from MediaTek immediately to address the improper input validation issue in the Modem component.

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