CVE-2026-21553: 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 involves improper input validation in the modem components of Unisoc's T8100, T9100, T8200, and T8300 products. An attacker can remotely trigger a denial of service condition, impacting availability. 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. No information about patches or vendor remediation is currently available.
Potential Impact
Successful exploitation results in remote denial of service, disrupting modem functionality and potentially affecting device availability. There is no impact on confidentiality or integrity, and no additional execution privileges are needed to exploit this vulnerability.
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 specific mitigations or workarounds are provided at this time.
CVE-2026-21553: 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 involves improper input validation in the modem components of Unisoc's T8100, T9100, T8200, and T8300 products. An attacker can remotely trigger a denial of service condition, impacting availability. 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. No information about patches or vendor remediation is currently available.
Potential Impact
Successful exploitation results in remote denial of service, disrupting modem functionality and potentially affecting device availability. There is no impact on confidentiality or integrity, and no additional execution privileges are needed to exploit this vulnerability.
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 specific mitigations or workarounds are provided at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Unisoc
- Date Reserved
- 2025-12-31T07:33:23.121Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a704b63bf32cb7a3433eb46
Added to database: 08/03/2026, 08:03:47 UTC
Last enriched: 08/03/2026, 08:18:02 UTC
Last updated: 08/03/2026, 19:36:45 UTC
Views: 8
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.