CVE-2026-21553
Received Received - Intake

Improper Input Validation in Modem Leads to DoS

Publication date: 2026-08-03

Last updated on: 2026-08-03

Assigner: Unisoc

Description
In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed

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Meta Information

Published
2026-08-03
Last Modified
2026-08-03
Generated
2026-08-03
AI Q&A
2026-08-03
EPSS Evaluated
N/A
NVD
CVE-2026-21553
EUVD
EUVD-2026-52234

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability involves improper input validation in a modem component. It allows remote attackers to cause a denial of service without needing additional privileges or user interaction.

Impact Analysis

An attacker could exploit this to disrupt modem functionality remotely, causing network outages or service interruptions without needing access to your system.

Compliance Impact

This vulnerability could lead to remote denial of service, which may impact availability of systems. For GDPR, this could affect data processing integrity and availability requirements. For HIPAA, it may compromise system availability for protected health information. However, specific compliance impacts depend on system context and mitigations.

Mitigation Strategies

Apply the latest security patches from your device manufacturer or modem vendor. Monitor network traffic for unusual activity and disable unnecessary network services to reduce exposure.

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