Improper Input Validation in UniSoC Modem Products
CVE-2026-21553

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-2026-21553?

In certain UniSoC modem products, an improper input validation issue has been identified that may allow an attacker to trigger a remote denial of service. This vulnerability does not require additional execution privileges, highlighting the need for users to apply security measures and updates promptly to protect their devices.

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

Download the Critical Vulnerability Management Cheat Sheet

Timeline

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

CVE-2026-21553 Data

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