CVE-2026-21551: CWE-20 Improper Input Validation in Unisoc (Shanghai) Technologies Co., Ltd. T8100/T9100/T8200/T8300
In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed
AI Analysis
Technical Summary
This vulnerability (CVE-2026-21551) affects Unisoc modem products T8100, T9100, T8200, and T8300. It is caused by improper input validation in the modem component, which can be exploited remotely to trigger a denial of service condition. The CVSS v3.1 base score is 7.5, reflecting high severity due to network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability (denial of service). No official remediation or patch information is currently available.
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. There are no known exploits in the wild at this time.
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 mitigation or temporary fix has been published.
CVE-2026-21551: CWE-20 Improper Input Validation in Unisoc (Shanghai) Technologies Co., Ltd. T8100/T9100/T8200/T8300
Description
In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-21551) affects Unisoc modem products T8100, T9100, T8200, and T8300. It is caused by improper input validation in the modem component, which can be exploited remotely to trigger a denial of service condition. The CVSS v3.1 base score is 7.5, reflecting high severity due to network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability (denial of service). No official remediation or patch information is currently available.
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. There are no known exploits in the wild at this time.
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 mitigation or temporary fix has been published.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Unisoc
- Date Reserved
- 2025-12-31T07:33:23.120Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a704b62bf32cb7a3433eb15
Added to database: 08/03/2026, 08:03:46 UTC
Last enriched: 08/03/2026, 08:18:16 UTC
Last updated: 08/03/2026, 21:38:32 UTC
Views: 8
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