CVE-2026-21551: CWE-20 Improper Input Validation in Unisoc (Shanghai) Technologies Co., Ltd. T8100/T9100/T8200/T8300
CVE-2026-21551 is a high-severity vulnerability in the modem components of Unisoc (Shanghai) Technologies Co., Ltd. products T8100, T9100, T8200, and T8300. The issue arises from improper input validation, which could allow a remote attacker to cause a denial of service without requiring any additional execution privileges. No information about patches or fixes is currently available.
AI Analysis
Technical Summary
This vulnerability involves improper input validation in the modem of Unisoc T8100/T9100/T8200/T8300 devices. An attacker can exploit this flaw remotely to trigger a denial of service condition. The CVSS 3.1 base score is 7.5, reflecting a high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability (denial of service). There are no known exploits in the wild, and no vendor remediation or patch information has been provided yet.
Potential Impact
An attacker can remotely cause a denial of service on affected Unisoc modem devices without needing any privileges or user interaction. This disrupts availability but does not impact confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor vendor communications for updates. No official fix or workaround has been published at this time.
CVE-2026-21551: CWE-20 Improper Input Validation in Unisoc (Shanghai) Technologies Co., Ltd. T8100/T9100/T8200/T8300
Description
CVE-2026-21551 is a high-severity vulnerability in the modem components of Unisoc (Shanghai) Technologies Co., Ltd. products T8100, T9100, T8200, and T8300. The issue arises from improper input validation, which could allow a remote attacker to cause a denial of service without requiring any additional execution privileges. No information about patches or fixes is currently available.
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 involves improper input validation in the modem of Unisoc T8100/T9100/T8200/T8300 devices. An attacker can exploit this flaw remotely to trigger a denial of service condition. The CVSS 3.1 base score is 7.5, reflecting a high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability (denial of service). There are no known exploits in the wild, and no vendor remediation or patch information has been provided yet.
Potential Impact
An attacker can remotely cause a denial of service on affected Unisoc modem devices without needing any privileges or user interaction. This disrupts availability but does not impact confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor vendor communications for updates. No official fix or workaround has 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: 6a704b62bf32cb7a3433eb15
Added to database: 08/03/2026, 08:03:46 UTC
Last enriched: 08/10/2026, 15:21:24 UTC
Last updated: 09/17/2026, 22:01:33 UTC
Views: 50
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