CVE-2026-21550
Received Received - Intake

Improper Input Validation in Modem Leads to Remote 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-2026-21550
EUVD
EUVD-2026-52231

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a remote denial of service issue in a modem component. It occurs due to improper input validation, allowing an attacker to cause a system crash or unresponsiveness without needing additional privileges.

Impact Analysis

An attacker could exploit this to disrupt network connectivity or device functionality remotely. This may lead to service outages, loss of communication, or degraded performance for affected systems.

Compliance Impact

This vulnerability causes a remote denial of service, which could disrupt services handling personal data. GDPR requires ensuring data availability, so such disruptions may impact compliance. HIPAA also mandates availability of protected health information, making this a potential compliance risk.

Mitigation Strategies

Apply the latest security patches from your device manufacturer or modem vendor. Disable unnecessary network services on the modem to reduce attack surface. Monitor network traffic for unusual patterns that may indicate exploitation attempts.

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