CVE-2026-21549
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-2026-21549
EUVD
EUVD-2026-52230

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.

Impact Analysis

The vulnerability could allow an attacker to remotely crash your device by sending malformed input, disrupting normal operations such as internet connectivity or communication services.

Compliance Impact

This vulnerability could lead to remote denial of service, which may impact availability of systems. Compliance with standards like GDPR or HIPAA often requires maintaining system availability and protecting against disruptions, so such vulnerabilities could pose risks to compliance.

Mitigation Strategies

Apply the latest security patches from the device manufacturer. Monitor network traffic for unusual activity. Disable unnecessary modem services if not in use. Restrict access to modem interfaces via firewall rules.

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