CVE-2026-21552: CWE-20 Improper Input Validation in Unisoc (Shanghai) Technologies Co., Ltd. T8100/T9100/T8200/T8300
CVE-2026-21552 is a high-severity vulnerability in the modem components of Unisoc (Shanghai) Technologies Co., Ltd. products T8100, T9100, T8200, and T8300. It involves improper input validation that could allow a remote attacker to cause a denial of service without requiring any privileges or user interaction.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-20 (Improper Input Validation), affects the modem functionality in Unisoc's T8100, T9100, T8200, and T8300 products. The flaw allows remote attackers to trigger a denial of service condition remotely without needing any additional execution privileges or user interaction. The CVSS 3.1 base score is 7.5, reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability (denial of service). No information about patches or fixes is currently available.
Potential Impact
An attacker can remotely cause a denial of service on affected devices, potentially disrupting modem functionality. There is no impact on confidentiality or integrity, and no privileges or user interaction are required for exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, monitor vendor communications for updates. No official remediation or temporary fixes have been published at this time.
CVE-2026-21552: CWE-20 Improper Input Validation in Unisoc (Shanghai) Technologies Co., Ltd. T8100/T9100/T8200/T8300
Description
CVE-2026-21552 is a high-severity vulnerability in the modem components of Unisoc (Shanghai) Technologies Co., Ltd. products T8100, T9100, T8200, and T8300. It involves improper input validation that could allow a remote attacker to cause a denial of service without requiring any privileges or user interaction.
CVSS v3.1
Score 7.5high
Affected software
Unisoc (Shanghai) Technologies Co., Ltd.
T8100/T9100/T8200/T8300
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-20 (Improper Input Validation), affects the modem functionality in Unisoc's T8100, T9100, T8200, and T8300 products. The flaw allows remote attackers to trigger a denial of service condition remotely without needing any additional execution privileges or user interaction. The CVSS 3.1 base score is 7.5, reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability (denial of service). No information about patches or fixes is currently available.
Potential Impact
An attacker can remotely cause a denial of service on affected devices, potentially disrupting modem functionality. There is no impact on confidentiality or integrity, and no privileges or user interaction are required for exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, monitor vendor communications for updates. No official remediation or temporary fixes have been published at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Unisoc
- Date Reserved
- 2025-12-31T07:33:23.120Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a704b62bf32cb7a3433eb18
Added to database: 08/03/2026, 08:03:46 UTC
Last enriched: 08/10/2026, 15:21:41 UTC
Last updated: 09/17/2026, 22:01:33 UTC
Views: 57
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