Improper Input Validation in Unisoc Modem
CVE-2026-21551

7.5HIGH

Key Information:

Vendor: Unisoc (shanghai) Technologies Co., Ltd.
Status: T8100/t9100/t8200/t8300
Vendor: CVE Published:; 3 August 2026

🔔 Create Unisoc (shanghai) Technologies Co., Ltd. Vulnerability Alert

What is CVE-2026-21551?

A vulnerability exists within Unisoc modems due to improper input validation. This flaw can be exploited to trigger a remote denial of service, allowing unauthorized users to disrupt normal operations without requiring additional execution privileges.

Affected Version(s)

T8100/T9100/T8200/T8300 Android13/Android14/Android15/Android16

References

https://www.unisoc.com/en/support/product-security-bullet...

CVSS V3.1

Score:

7.5

Severity:

HIGH

Confidentiality:

None

Integrity:

None

Availability:

None

Attack Vector:

Network

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

None

Scope:

Unchanged

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Timeline

Vulnerability published
Aug 3, 2026
Vulnerability Reserved
Dec 31, 2025

CVE-2026-21551 Data

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